Use case

Manage Your Amazon Channel

The problem
Running Amazon as a CPG brand means juggling FBA replenishment (with shelf-life constraints), monitoring your Buy Box for unauthorized sellers, calculating true profitability after every Amazon fee, and keeping inventory in sync with your Shopify store and wholesale marketplaces. Most brands manage this across Amazon Seller Central, spreadsheets, and hope — losing margin to storage fees, overselling, and unprofitable SKUs they can't identify.
How Starch solves it
Starch combines Amazon Channel Manager (for FBA ops, Buy Box, and profitability) with Marketplace Sync (for Shopify and wholesale inventory sync) into a unified Amazon ops layer. Your inventory stays synchronized across every channel, your replenishment accounts for shelf life, and you see true per-SKU profitability after every fee and ad dollar — so you know which products are actually making money.
How it works

Weekly Amazon ops review

  1. 1Open Amazon Channel Manager and review the FBA replenishment dashboard — which SKUs need restocking based on velocity and shelf life.
  2. 2Check Buy Box status: are you winning the Buy Box on all your listings, or have unauthorized sellers appeared?
  3. 3Pull the profitability report: true margin by SKU after FBA fees, referral fees, ad spend, and storage costs.
  4. 4Check Marketplace Sync to verify inventory numbers match across Amazon, Shopify, and wholesale channels.
  5. 5Act on what you find: restock, remove long-term storage risks, delist unprofitable SKUs, or investigate Buy Box losses.
Apps that power this
CPGComing Soon
Amazon Channel Manager

Manage your Amazon business without the guesswork. AI handles FBA replenishment, optimizes Subscribe & Save, monitors your Buy Box, and tracks true profitability after every Amazon fee.
CPGComing Soon
Marketplace Sync

Sync Shopify orders and inventory with wholesale marketplaces in real time. Two-way sync prevents overselling, automates order routing, and keeps stock levels accurate across every sales channel.
CPGComing Soon
Inventory Planner

One view of inventory across every location. See real-time stock levels at your co-packer, 3PL, and every warehouse — with smart allocation, reorder automation, and shelf-life tracking built in.
Frequently asked questions
Does this work for brands not on Amazon yet?
It's designed for brands already selling on Amazon. If you're considering Amazon, the profitability modeling can help you estimate margins before committing.
What about Amazon advertising?
Amazon Channel Manager tracks ACoS, ROAS, and ad spend per SKU. It doesn't create or manage campaigns directly — you still use Amazon Ads for that — but it gives you the profitability context to decide which products deserve more ad spend.
Which wholesale marketplaces does Marketplace Sync support?
Shopify (required as the hub), Faire, Abound, Bulletin, RangeMe, and others. New marketplaces are added based on demand.
Are these apps available now?
Currently in development. Request beta access at starch.site and we'll notify you when they launch.

Ready to manage your amazon channel?

Join the closed beta — free for early users.

You're on the list! We'll be in touch soon.