Sellerboard tells you what your numbers did — real-time profit dashboard, FIFO COGS, 100+ Amazon fees, returns, PPC analytics, FBA reimbursements. SentryKit tells you what just happened: every Buy Box, hijacker, and listing event the moment Amazon's state changes, with per-event recovery context attached. Pair them, don't pick.
Same operation, different timelines. Sellerboard is purpose-built for the financial review — yesterday's P&L, this week's COGS, last month's PPC ROI. SentryKit is purpose-built for the recovery moment — the Buy Box loss at 2:14 AM, the hijacker that just landed on your ASIN, the listing change that flipped suppression on. The two run alongside each other.
Real-time profit dashboard with sales, refunds, ad costs, payout, net profit. FIFO COGS, 100+ Amazon fees factored in, returns breakdown, indirect-expense amortization, FBA reimbursement claims. Built for the "did this make me money?" question.
Buy Box Lost, Buy Box Suppressed, Hijacker Detected, Main Image Changed, Search Suppression — every alert ships with competitor identity, price gap, floor breach context, and three ranked recovery options. Built for the "what should I do about this right now?" question.
The takeawaySellerboard rolls every event into the next morning's P&L. SentryKit fires the event the moment it happens, with recovery context attached. Different jobs, different timelines, same operation.
Sellerboard is a real product — Germany-based, founded 2017, used by 10K+ Amazon sellers. The profit dashboard is genuinely good: real-time sales and refund data, FIFO COGS, 100+ Amazon fees factored in, returns breakdown, trend dashboard, indirect-expense amortization, FBA reimbursement workflow, PPC analytics with bid automation, and an alerts module that covers listing changes, new sellers, loss of Buy Box, fee modifications, negative feedback, and ASIN changes. The product team has clearly built a complete profit platform.
SentryKit is built around a different question: what does the event-signal layer look like as a dedicated product? That answer takes a different shape — every Buy Box and hijacker event delivered the moment Amazon's state changes, with the recovery context (seller profile, floor-breach calculation, three ranked options) built into the alert itself, every ASIN covered with no plan-tier cap, 20+ alert types in one unified event stream.
Both products serve sellers well. They serve them on different surfaces, on different timelines. Sellerboard is the profit platform that tells you what the morning P&L looks like. SentryKit is the event-signal layer that fires the moment something happens and tells you what the response should be — so by the time it shows up in tomorrow's books, it's already been handled.
Profit platform for after-the-fact financial truth. Event-signal layer for right-now recovery context. Always together.
Each row is a question and a timeline — what each tool answers, and when. Sourced from each company's public pricing and feature pages.
| Capability | Sellerboard | SentryKit |
|---|---|---|
| Primary question answered | "Did this make me money? What did each ASIN actually cost?" — profit, returns, COGS, fees, PPC ROI, indirect expenses, reimbursement claims. | "What just happened on this ASIN — and what should the response look like right now?" — Buy Box, hijacker, listing health events with recovery context. |
| Timeline | After-the-fact — real-time dashboard updates the financial picture as orders settle; the natural review surface is yesterday's P&L through last month's trends. | Real-time per-event — Buy Box Lost and Buy Box Suppressed fire the moment Amazon's state changes, with full recovery context attached. |
| Buy Box Lost vs Buy Box Suppressed | Bundled — Sellerboard's alerts module covers "loss of Buy Box" as one of several event types; Lost and Suppressed are not separated as discrete events with separate recovery paths. | Separate alerts with separate recovery paths. Lost means a competitor took it. Suppressed means Amazon hid it from everyone. |
| Hijacker detection with seller profile | "New sellers" alert — Sellerboard surfaces when a new seller appears on your listing as part of the alerts module. Account age, feedback rating, and fulfillment channel are not documented in the alert payload. | Yes. Account age, feedback rating, fulfillment channel, and full Seller ID on every hijacker event (Pro tier). |
| Profit, COGS, fees, returns, PPC ROI | Yes — depth. FIFO + constant + batch + period-based + marketplace-specific COGS, 100+ Amazon fees, returns by reason, PPC KPIs per campaign / ad group / keyword with bid automation by target profitability or ACOS. | Not the job. SentryKit does not calculate margin or run P&L — that is Sellerboard's surface, and it does it well. |
| FBA reimbursement workflow | Yes. "Refunds for lost inventory" finds FBA errors, identifies items customers failed to return, and flags cases where Amazon reimbursed less than COGS. | Not the job. SentryKit's role is preventing the listing-side issues that lead to lost-inventory cases — by surfacing suppression, image swaps, and category changes the moment they fire. |
| Listing content alerts (main image, A+ content, category, suppression) | Partial — Sellerboard covers listing changes and ASIN changes inside the alerts module. A+ content, category change, and search suppression as discrete event types are not documented in the alert set. | Yes. Main Image Changed, Product Details Change, Category Change, Search Suppression, Suspended Listing, and more — every ASIN. |
| Recovery context on the alert | Sellerboard alerts notify; the recovery moves happen in adjacent modules (PPC, inventory, profit dashboard) or outside the platform. | Yes. Every event ships with competitor seller name, price gap, floor-breach calculation, and three ranked recovery options on the alert itself. |
| Pricing model | Standard $19/mo ($15 annual — 3,000 orders), Professional $29/mo ($23 annual — 6,000 orders), Business $39/mo ($31 annual — 15,000 orders), Enterprise $79/mo ($63 annual — 50,000 orders). Tiers also gate seller-account count and follow-up email volume. | $19/month Starter (up to 2,000 orders). $49/month Pro (up to 10,000 orders, plus seller profile enrichment). Per-order pricing — no ASIN caps. |
| Free trial | 1-month free trial, no credit card required. | 30 days, no credit card, full feature access. |
Comparison reflects publicly available information as of April 2026 from sellerboard.com, sellerboard.com/pricing, and SentryKit's own product pages. Sellerboard plans, order caps, and pricing vary by tier (Standard → Professional → Business → Enterprise) and may differ for annual vs monthly billing. SentryKit is a dedicated real-time event-signal product purpose-built for Buy Box, hijacker, and listing health intelligence — it does not run P&L or profit analytics, and is designed to run alongside whatever profit-analytics platform, repricer, or research suite you already use.
Every SentryKit event ships with the recovery context built in — competitor identity, price gap, floor-breach risk, ranked options. That depth is what a layer purpose-built for the recovery moment optimizes for. Two examples.
2:14 AM. A new FBM seller lists your ASIN $6 below your price. Their account is 3 days old. Feedback rating: 74%. Buy Box drops to them.
Without an event-signal layer alongside. You see it the next morning when you open your Sellerboard profit dashboard. Yesterday's gross dropped, FBM seller appears in the new-sellers list, the COGS impact is calculated, and the listing-change feed shows the Buy Box loss. Useful — but the recovery moment was eight hours ago. Conversion has already halved through the morning. You file a Brand Registry report at 9 AM instead of 2:15 AM.
With SentryKit alongside. Your phone fires at 2:15 AM — "Hijacker Detected, B0C4NVPL7R, Seller A, FBM, 74% feedback, 3-day-old account, $6 below you." Coverage is automatic across every ASIN, with the recovery context already on the alert. By the time you open Slack you know matching the price would put you at -$0.76 below floor (verified against your Sellerboard COGS). You hold, document the Seller ID, file a Brand Registry report at 2:30 AM, and go back to sleep. Sellerboard rolls the financial impact into the next morning's P&L — which is now a much smaller dent.
Sellerboard tells you what your numbers did. SentryKit tells you what just happened. Each does what it is built for, on its own timeline.
Sellerboard rolls every order, refund, fee, and PPC charge into the next morning's profit dashboard with FIFO COGS and 100+ fees factored in — exactly the surface you want for the financial review. SentryKit fires the underlying event the moment it happens, with the recovery context attached, so by the time it shows up in tomorrow's books, it's already been handled. The two timelines meet on the same operation. Real-time recovery, after-the-fact P&L, same brand.
Sellerboard's alerts module covers loss of Buy Box, new sellers, listing changes, fee changes, negative feedback, and ASIN changes well — solid coverage as a feature inside the broader profit platform. A dedicated event-signal layer is built around the recovery moment itself: every Buy Box event arrives with the competitor's seller name, price gap, floor-breach calculation, and three ranked recovery options on the alert. Every Hijacker Detected event ships with account age, feedback rating, fulfillment channel, and full Seller ID. "I knew what to do at 2:15" alongside "the books showed it the next morning."
Sellerboard's "Refunds for lost inventory" workflow recovers what Amazon owes you after the fact — finding FBA errors, items customers failed to return, and reimbursement gaps against COGS. A dedicated event-signal layer is built around what happens before that: Main Image Changed, Product Details Change, Category Change, Search Suppression, Suspended Listing — fired the moment the listing flips, so the listing-side issues that often precede lost-inventory cases get caught and fixed live. Recover what Amazon owes you. Prevent what would have cost you.
SentryKit is built to sit alongside whatever profit platform you already pay for. Pricing is order-volume based, not catalog-size based — no ASIN caps, no tier-gated alert types, no hard cutoffs.
Sellerboard's plans run Standard $19/mo (or $15/mo annual — 3,000 orders), Professional $29/mo (or $23/mo annual — 6,000 orders), Business $39/mo (or $31/mo annual — 15,000 orders), and Enterprise $79/mo (or $63/mo annual — 50,000 orders). SentryKit Starter ($19) covers up to 2,000 orders, Pro ($49) covers up to 10,000. Add an SKU and your bill stays exactly the same. Alerts keep running through Q4 spikes; if you exceed your monthly order limit you get a clear dashboard notification, not a black-out.
Sellerboard's 2026 plans gate order count, follow-up email volume, additional seller accounts, and additional users by tier. The Standard plan does not include automated reports — those start at Enterprise. Verify current Sellerboard tiers at sellerboard.com before committing.
Same operation — different layers of the stack. Sellerboard handles the P&L. Most sellers also evaluate a repricer for the day-to-day pricing layer and a research suite for launch and keyword work. Here are the three most often shortlisted alongside SentryKit.
Real Time Alerts · No Commitments · Advanced Insights
No. Sellerboard is a profit-analytics platform — real-time profit dashboard, FIFO COGS, 100+ Amazon fees factored in, returns breakdown, trends, indirect expenses, PPC analytics, FBA reimbursements, inventory management, and follow-up email autoresponder. SentryKit is the real-time event-signal layer that pairs with it — every Buy Box, hijacker, and listing event the moment Amazon's state changes, with per-event recovery context attached. The two answer different questions on different timelines: Sellerboard answers "did this make me money?", SentryKit answers "what just happened, and what should I do about it right now?" Most sellers run them together.
Sellerboard's alerts module covers listing changes, new sellers, loss of Buy Box, fees modifications, negative feedback, and ASIN changes — solid, useful coverage as a feature inside the broader profit platform. SentryKit is a dedicated signal layer built around the recovery moment itself: every Buy Box event ships with the competitor's seller name, price gap, floor-breach context, and three ranked recovery options on the alert. Hijacker events arrive with account age, feedback rating, fulfillment channel, and full Seller ID on Pro. The differentiation is alert depth and per-event recovery context — not whether monitoring exists. Different shape, different job.
Yes — they pair cleanly. SentryKit connects to your Amazon Seller Central account independently of Sellerboard and covers every ASIN with real-time Buy Box, hijacker, and listing health events. Sellerboard continues to do what it does well — profit dashboard, COGS, fees, returns, PPC analytics, reimbursements, inventory. Many sellers run them side by side: SentryKit fires the per-event signal, Sellerboard rolls the financial impact into the next morning's P&L. Same operation, different timelines.
If you're actually evaluating profit-analytics platforms, the four most often shortlisted alongside Sellerboard are: Helium 10's Profits tool (bundled inside the broader research suite), Jungle Scout's Sales Analytics (bundled similarly), Hopted (different shape — pulls Amazon data into Google Sheets rather than a dashboard), and Sellerise (versatile alternative covering inventory, profit, and reimbursements). SentryKit is not in this category — we're the dedicated event-signal layer that pairs with whichever profit platform you choose, so the alerts and the books stay independent.
SentryKit delivers Buy Box Lost and Buy Box Suppressed events in real time — the moment Amazon's state changes, the alert is on its way. Every alert includes the competitor's seller name, their price, the exact gap to your price, whether matching that price is above or below your floor, and three ranked recovery options. Sellerboard's profit dashboard is real-time on the financial side, and its alerts module covers the key seller events on a polling cadence — the differentiation is per-event recovery depth and the moment-of-event delivery for Buy Box and hijacker signals.
SentryKit is $19/month on Starter (up to 2,000 orders) and $49/month on Pro (up to 10,000 orders, plus seller profile enrichment). Pro has $8 per 1,000 orders in overage. Both plans include a 30-day free trial with no credit card. Sellerboard's 2026 plans run Standard $19/mo (or $15/mo annual — 3,000 orders), Professional $29/mo (or $23/mo annual — 6,000 orders), Business $39/mo (or $31/mo annual — 15,000 orders), and Enterprise $79/mo (or $63/mo annual — 50,000 orders), with a 1-month free trial. Sellerboard prices the profit platform; SentryKit prices the event-signal layer alongside. Together, most sellers run both for under $40/month combined. Verify current Sellerboard tiers at sellerboard.com before committing.
Start the 30-day free trial at live.sentrykit.com/signup — no credit card. Connect your Amazon Seller Central account in a few clicks. Alert coverage begins across every ASIN from day one — no plan-tier cap. After 30 days, choose Starter or Pro based on your monthly order volume. Sellerboard keeps doing what it does best on the P&L side. SentryKit handles the real-time event signal alongside it, so your morning P&L review and your live recovery loop run on the same operation.
