Amazon SP-API powered

Tame the
FBA beast.

The other tools manage your inventory.
MarketMonster unleashes it.

Private beta · accepting sellers on the waitlist

Private beta
by invitation
SP-API
native sync
FBA-native
from day one

What it does

Everything FBA.
Nothing else.

No bookkeeping paywall. No "insights" upsell. No half-built workflow features stuck in someone's roadmap since 2024.

Shipment Creation

Build compliant FBA inbound shipments in minutes. Auto-generates box content, labels, and packing lists.

Inventory Sync

Real-time sync with Amazon SP-API. Always know what's in stock, what's in transit, and what needs replenishing.

Live Tracking

Watch shipments move through Amazon's network in real time. No more guessing when your inventory goes live.

Team Access

Invite your prep team, 3PL, or VAs. Role-based permissions keep everyone in sync without oversharing.

Manifesto

Stop being a lab rat.
Start being a Market Monster.

Your competition is still pipetting data between spreadsheets. You're about to skip the experiment entirely.

Lab results are in

You're working too hard for too little.

Tabs on tabs on tabs. Manual box content sheets. Labels printed twice because the first set was wrong. Every hour lost to logistics is an hour you didn't spend on margin.

The new rule

Don't just manage your inventory —
devour the competition.

MarketMonster turns inbound chaos into an unfair advantage. Ship faster, price sharper, and leave the lab rats behind — still running the maze you already solved.

Under the hood

The hard parts, handled.

Feature lists look similar at first glance. The difference is what happens when Amazon misbehaves.

Smart placement selection

Amazon returns multiple placement options; only one usually has a healthy partnered carrier. We race them in-flight and pick the winner — while other tools take whatever Amazon listed first.

Prep & label ownership, auto-synced

Pull prep details from Amazon on every draft and keep prep owner and label owner consistent — automatically. Never re-pick the same dropdown twice a day.

Hardened against Amazon's bad days

Silent 400s, phantom rate limits, placement caches that won't invalidate — we've hit them all and shipped the workarounds. Your shipments don't break when Amazon hiccups.

Listing price history, included

Track every listing price over time — list, business, min, max. No extra tier, no paywalled "insights" upsell. Just the data you already paid Amazon for.

Pricing

One credit per manifest.
One wallet, every tier.

Each Amazon FBA manifest you ship costs one credit. Credits roll across every tier — start on PAYG and graduate when your volume earns it.

Plan calculator

Show me the math.

Move the slider. Pick the platforms you target. We’ll run the numbers across every tier and recommend the one that costs you the least.

Manifests per month40
1100200300400
40 manifests / month
40 credits / month
Cheapest at your volume
Solo$19.99/mo

Solo saves you $28.01/mo vs. buying credits one pack at a time.

PAYG$48.00/mo
40 × $1.20/credit (25-pack rate)
Solorecommended$19.99/mo
$19.99 base · 60 included covers 40
Teams$59.00/mo
$59.00 base · 300 included covers 40
Warehouse$149.00/mo
$149.00 base · 1000 included covers 40
PAYG
$0/mo

Pay only for the manifests you ship. Credits never expire.

  • ·1 seat
  • ·pack purchases credits/mo
  • ·Overage: $1.50/credit
  • ·Credits never expire
Start with credits
Solo
$19.99/mo

Single-shop monthly auto-refill — built for steady-volume sellers.

  • ·1 seat
  • ·60 included credits/mo
  • ·Overage: $1.50/credit
  • ·Pick-list share links
Start with Solo
TeamsMost popular
$59.00/mo

Role separation, team pick-lists, priority support.

  • ·5 seats
  • ·300 included credits/mo
  • ·Overage: $1.25/credit
  • ·Pick-list share links
  • ·Team-mode pick lists
  • ·Custom box templates
  • ·P&L snapshots
  • ·Custom operational roles
Start with Teams
Warehouse
$149.00/mo

Multi-store, warehouse workflows, API & webhooks.

  • ·25 seats
  • ·1000 included credits/mo
  • ·Overage: $1.00/credit
  • ·Pick-list share links
  • ·Team-mode pick lists
  • ·Custom box templates
  • ·P&L snapshots
  • ·Custom operational roles
  • ·Multi-store (multiple seller accounts per platform)
  • ·Warehouse workflows
  • ·API & webhooks
Start with Warehouse
Enterprise
Contact us

SSO, SLA, custom integrations, dedicated onboarding.

  • ·Custom seats
  • ·custom credits/mo
  • ·Overage: custom
  • ·Pick-list share links
  • ·Team-mode pick lists
  • ·Custom box templates
  • ·P&L snapshots
  • ·Custom operational roles
  • ·Multi-store (multiple seller accounts per platform)
  • ·Warehouse workflows
  • ·API & webhooks
  • ·SSO / SAML
Talk to sales
Pricing you can plan around. Launch pricing is locked for 12 months from your sign-up date — even if rates shift for new cohorts later. We’ll publish a 90-day post-launch review of how the math is actually working, and if our new pricing is cheaper than your locked rate, you keep the lower number.

What you won't find here

×No $25/mo insights paywall×No awful white-screen UI×No half-built "workflow" features×No SP-API lag tax×No "contact support for a typo"

Ready to stop
fighting Amazon?

The lab rats are still counting cheese.

Private beta. Join the waitlist and we'll bring you in as we scale onboarding.

Request early access