True profit per item, multi-location inventory, sourcing decisions and orders across marketplaces are in development. Team workspaces and secure sign-in work now. Each feature is labeled, and moves to Available Now only when it works in production.
Updated
Market Monster calculates profit after every cost a flip actually carries: purchase price, tax, inbound shipping, prep, marketplace referral and fulfillment fees, storage and returns. Revenue that loses money after fees shows up as a loss, not a sale.
Sale price$40.00
Costs, all seven−30.60
True profit$9.40
Margin 23.5%ROI 52.2%
Market Monster tracks every unit you own by where it physically sits: an Amazon FBA warehouse, a prep center, a storage unit or your garage. One count, kept current, instead of a spreadsheet per location.
Amazon FBA212
Prep center64
Storage unit138
Garage27
Market Monster keeps your product research and sourcing leads next to your inventory, so a buy decision is checked against what you already hold and the margin you require before you spend money.
Market Monster is being built to bring orders, listings, fulfillment and returns from Amazon, Walmart and eBay into one view. No marketplace connection is live yet; each will be listed here when it works.
| Amazon | Not live |
|---|---|
| Walmart | Not live |
| eBay | Not live |
A Market Monster account is a workspace for your business. Invite staff by email and give each person one of four roles, owner, admin, member or viewer, so everyone has only the permissions they need.
Email invitations · Owner, admin, member and viewer roles · A workspace per business
Sign in with a password, a passkey or a one-time magic link. Two-factor uses an authenticator app or a passkey, and owners and admins must turn it on before they change anything. Every email is verified, passwords are checked against Have I Been Pwned, and an account locks after 5 failed sign-ins.
Passkeys · Authenticator app two-factor · Email verification · Breached-password check
Early access is by email. Write to support@marketmonster.io and tell us how you sell.