30 days free, then $15/mo flat
unlimited ASINs · all marketplaces · all 20+ alerts
Start free — claim $15/mo flat →AMZAlert prices by the ASIN and locks API access, Slack, and 1-hour monitoring behind its top tier. SentryKit prices by the storefront and includes REST API & webhooks, real-time alerts, and Slack delivery on every plan. Switch to SentryKit. Same alerts, no gate.
AMZAlert and SentryKit both monitor Amazon listings for Buy Box loss, listing changes, and reviews — same category, same job. Where they diverge is which features you get without upgrading.
AMZAlert's entry tier (New Seller, $0.95/ASIN/month) checks every 24 hours and leaves out API access, Slack, and JIRA integration. Those, plus 1-hour monitoring, only unlock on the Elite Seller tier at $1.35/ASIN/month — and the bill grows with every ASIN you add either way.
SentryKit's Starter plan at $19/month includes all 20+ alert types, real-time delivery, and REST API & webhooks from day one. Nothing is held back for a higher tier, and pricing scales with storefronts, not ASIN count.
What each tool actually does, side by side — sourced from AMZAlert's public pricing page. AMZAlert has features SentryKit doesn't, and they're noted honestly below.
| Feature | AMZAlert | SentryKit |
|---|---|---|
| Pricing model | Per ASIN — $0.95/ASIN/mo (New Seller) or $1.35/ASIN/mo (Elite Seller). Cost climbs with catalog size. | Per storefront — $19/mo Starter (2 storefronts) or $49/mo Pro (5 storefronts). Unlimited ASINs on every plan. |
| Monitoring speed | Tiered — 24-hour intervals on New Seller; 1-hour intervals only on Elite Seller. | Event-driven on every plan — alerts fire the moment Amazon's state changes. |
| Buy Box loss & gain alerts | Yes | Yes, with floor-breach context and ranked recovery options |
| Listing content & review alerts | Yes | Yes, including dedicated Main Image, A+ Content, and Top-Rated Review alerts |
| Hijacker / unauthorized seller alert with profile | Competitor tracking (rank, price, content, status) is documented; a dedicated hijacker alert with seller profile data is not. | Yes — account age, feedback rating, and fulfillment channel on every Hijacker Detected event |
| REST API access | Elite Seller only ($1.35/ASIN/mo) | Included on every plan |
| Slack / JIRA delivery | Elite Seller only | Slack included on every plan (no JIRA integration) |
| Listing analyzer, BSR tracking & Keepa integration | Yes, on both tiers | No — SentryKit is alerting-only, not a catalog analytics tool |
| Marketplace coverage | Primarily US Amazon marketplace per user reviews; expansion described as planned | Unlimited marketplaces on every plan |
Comparison reflects publicly available information as of August 2026 from carbon6.io/amzalert and its Capterra listing. Capterra's third-party listing shows a differing "starting at $35/mo" figure that appears to predate AMZAlert's current per-ASIN pricing — the live carbon6.io pricing is used here as the more current source. AMZAlert's feature set and pricing may vary by plan or change without notice; verify current details at carbon6.io/amzalert.
Every SentryKit event ships with the context your team needs to act correctly, on every plan — not just the top one. Two examples.
7:40 AM. You add 40 new ASINs after a product launch. A new FBM seller lists on one of them overnight at $6 below your price.
With AMZAlert (New Seller). The 24-hour interval means this doesn't surface until the next check-in. When it does, it's a competitor-tracking notice, not a dedicated hijacker alert with a seller profile — and your monthly bill just went up by 40 × $0.95, whether or not you upgrade for faster checks or API access.
With SentryKit. The alert fires the moment it happens, with the seller's account age, feedback rating, and fulfillment channel on the alert itself — on Starter, the same plan you were already on before the launch. Storefronts, not ASINs, are what move your price.
Same event. The difference is whether growing your catalog also grows your bill.
AMZAlert holds API access, Slack, and JIRA integration back for its Elite Seller tier at $1.35/ASIN/month. SentryKit ships all of it on Starter at $19/month. If your team routes alerts into other tools, you shouldn't have to upgrade to make that possible.
AMZAlert charges $0.95–$1.35 per ASIN per month, so a product launch or catalog expansion raises your bill automatically. SentryKit's Starter and Pro plans include unlimited ASINs — only the number of storefronts you run changes your price.
AMZAlert's entry tier checks every 24 hours; 1-hour monitoring only unlocks on Elite Seller. SentryKit fires the moment Amazon's state changes, on Starter and Pro alike — alert speed isn't something you pay more to get.
AMZAlert charges per ASIN, so the bill grows every time your catalog does. SentryKit's plans include unlimited ASINs, orders, and marketplaces — only the number of storefronts you run affects your price.
Both plans include the full 30-day free trial, no credit card. AMZAlert's per-ASIN pricing means a 40-SKU launch costs $38–$54 more per month on top of your existing plan; on SentryKit, it costs nothing extra unless you add another storefront.
AMZAlert isn't the only Buy Box and listing monitor sellers weigh against SentryKit. These three come up often in the same evaluation.
Real Time Alerts · No Commitments · Advanced Insights
Yes. SentryKit and AMZAlert both monitor Amazon listings for Buy Box loss, listing changes, and review activity in real time — same category, same job. The main differences are how each is priced (per-ASIN vs. per-storefront) and which features are held back for a higher tier.
SentryKit includes REST API access, webhooks, and Slack delivery on every plan, including Starter at $19/month. AMZAlert only unlocks API access, Slack, and JIRA integration on its Elite Seller tier at $1.35/ASIN/month. SentryKit also ships a dedicated Hijacker Detected alert with the unauthorized seller's account age, feedback rating, and fulfillment channel — AMZAlert's public plans list competitor and listing tracking but not a named hijacker alert with seller profile data.
AMZAlert includes a listing analyzer, sub-category BSR tracking, and Keepa integration on both of its plans — SentryKit doesn't offer these. SentryKit is an alerting platform, not a catalog analytics tool, so if BSR tracking or a listing analyzer matters to you, that's a genuine reason to keep AMZAlert or a similar tool alongside SentryKit.
SentryKit delivers alerts in real time as events happen on your listings, on every plan. AMZAlert's entry tier (New Seller) checks every 24 hours; 1-hour monitoring only unlocks on the Elite Seller tier at $1.35/ASIN/month. So on AMZAlert, alert speed itself is priced — on SentryKit, it isn't.
AMZAlert charges per ASIN — $0.95/ASIN/month on New Seller, $1.35/ASIN/month on Elite Seller — so the bill grows every time your catalog does. SentryKit charges per storefront: $19/month for Starter (2 storefronts, unlimited ASINs) or $49/month for Pro (5 storefronts, scales further), both with a 30-day free trial.
Yes. SentryKit connects to your Seller Central account directly during signup, and most sellers start receiving alerts within minutes. There's no automated import from AMZAlert's product groups or saved reports — you're setting up SentryKit's monitoring fresh, which is typical when switching between Amazon monitoring tools.
Start a 30-day free trial at live.sentrykit.com/signup — no credit card required. SentryKit connects to your Seller Central account and begins monitoring Buy Box, suppression, hijacker, inventory, and review activity across every ASIN within minutes.
