Receiving in one place
Log parcel and pallet inbound, capture photo evidence, and reconcile against the seller PO before anything moves to the prep floor.
Run your prep center on one platform.
Receiving, prep tracking, FBA shipment creation through Amazon SP-API, itemized billing, and a seller portal — all in one app, designed for Amazon FBA prep operators.
Bundled with every plan
asinIQ — Amazon Sales Estimator
Estimate monthly demand for any ASIN in seconds. Bundled with every Stratosphere plan and shareable with your sellers — try it on any ASIN below.
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What it does
The operating system for Amazon FBA prep centers
From inbound receiving and FNSKU labeling to FBA shipment creation and per-unit invoicing, Stratosphere replaces the spreadsheets, label printers, and ticket queues that prep centers usually duct-tape together.
Prep tracking, line by line
Move every unit through FNSKU labeling, polybag, bundle, fragile, and oversize prep with a full audit trail your sellers can see.
FBA shipments via SP-API
Build, label, and book FBA shipments directly through Amazon SP-API — STA / SPD partnered carriers, multi-destination splits, and 2D box content barcodes.
Itemized billing on autopilot
Configure your prep tiers, add-ons, and receiving fees once. Stratosphere generates the per-unit invoice for every seller and collects via Stripe.
How prep centers use it
Three steps from onboarding to invoice
No more spreadsheets, no more label printers without a queue, no more emailing PDF invoices.
01
Connect your sellers
Onboard your existing clients in minutes. Each seller links Seller Central once and SKUs, FNSKUs, and prep instructions sync automatically.
02
Run prep on the floor
Your team logs inbound, runs prep, and attaches photo evidence — all from a single dashboard your staff can pick up on day one.
03
Ship and bill automatically
Build FBA shipment plans through SP-API and let Stratosphere generate itemized invoices for every seller. No spreadsheets.
Why Stratosphere Prep
Built for prep operators, not adapted from a 3PL tool
Built for prep centers
Not a generic 3PL or WMS retrofit — Stratosphere is designed end to end around how Amazon FBA prep operations actually work.
SP-API, native
FBA shipment creation, partnered carrier booking, and box content labels are built into the platform. No middleware, no connectors to maintain.
Per-unit billing, automated
Your prep tiers, add-ons, and receiving fees become the invoice — generated automatically, paid through Stripe, downloadable by the seller.
Seller portal included
Every plan ships with a branded seller portal so your clients can see their inventory and shipments in real time, instead of emailing for status.
FAQ
Common questions
What is Stratosphere Prep?
Stratosphere Prep is software for Amazon FBA prep centers. It runs the operating side of a prep business — inbound receiving, prep tracking, FBA shipment creation through SP-API, itemized billing, and a seller portal — so you can focus on the warehouse floor.
Do you operate a warehouse?
No. Stratosphere is a software platform. You bring the warehouse, the staff, and the sellers; we provide the system that runs them.
Does it integrate with Amazon SP-API?
Yes. FBA shipment plans, partnered carrier (UPS) booking, 2D box content barcodes, and Amazon US + Canada marketplaces are all built in.
Can my sellers log in?
Yes. Every plan includes a branded seller portal where your clients can see live inbound, prep status, FBA shipments, and downloadable invoices.
How is billing handled?
You configure your own prep rates, add-ons, and receiving fees. Stratosphere generates the per-unit invoice for each seller and collects via Stripe. You set the prices; we automate the math.
Where do I send freight?
You don't — we're a software platform. Inventory ships to your warehouse, not to ours.
Ready when you are
Replace the spreadsheets. Keep the floor.
Start a free trial, import your sellers, and have your first FBA shipment booked through SP-API the same week.