Resale Operating System
Nine marketplaces. One inventory. Twelve seconds.
CheapSell pushes one scan to nine live marketplaces, mirrors delistings back, and reprices against competitor floors every four minutes. Built in Austin by a former Poshmark power seller who got tired of paying 13–15% in fees on every sale.
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- Live integrations
- 9
- Items cross-listed in 2024
- 184M
- Avg. push-to-live
- 11.4s
Yeezy 350 V2 Bone — Size 10$228.00
Sony WH-1000XM4 — Black$184.00
Patagonia Synchilla — L$112.00
iPhone 13 Pro 256GB — Unlocked$489.00
Vintage Carhartt Detroit — 42$96.00
eBayPoshmarkMercariDepopFacebookEtsyShopifyGrailedKidizen
Integration Directory
Every market you sell on — and the ones coming next.
Nine integrations are live today. Two more are in private beta with selected sellers. Tap any tile for listing-format notes, fee context, and the markets we cover on your behalf.
All
Live (9)
Private Beta (2)
Live
Poshmark
Live · Closet + BundleMercari
Live · Standard + ProDepop
Live · Single + BundleFacebook Marketplace
Live · Local + ShippingEtsy
Live · Vintage + HandmadeShopify
Live · DTC StorefrontGrailed
Live · Menswear + StreetwearKidizen
Live · Kids + MaternityPrivate Beta
Vinted
Private Beta · EU + UKCurtsy
Private Beta · US
By the Numbers
What nine marketplaces actually saves you, per quarter.
These are three live seller archetypes — pulled from anonymized Q1 2025 transaction data on the platform. Your mileage will vary. The math is per seller, per quarter, and shows the gap between single-marketplace lock-in and cross-listed distribution.
Casual Declutterer
Margot · Austin, TX
62 sales / quarter · $4,180 GMVSingle marketplace (eBay only)$553.85
Cross-listed across 9$312.42
Quarterly fee savings
$241.43
Same inventory, 41% lower effective take rate when orders distribute across Poshmark, Mercari, and Depop instead of concentrating on eBay alone.
Mid-Volume Sneaker Reseller
Devon · Columbus, OH
410 sales / quarter · $58,940 GMVSingle marketplace (eBay only)$7,809.55
Cross-listed across 9$4,977.30
Quarterly fee savings
$2,832.25
Auto-repricer refreshes every four minutes against 41M competitor listings — Devon's Grailed and StockX-equivalent SKUs clear at higher floors before they stale-list.
Refurbished-Phone Dealer
Yuna · Brooklyn, NY
128 sales / quarter · $84,200 GMVSingle marketplace (eBay only)$11,156.50
Cross-listed across 9$7,602.15
Quarterly fee savings
$3,554.35
Locked carrier / unlocked SKUs route to the market where they actually convert — Facebook Marketplace pulls the local pickup premium, eBay holds the international buyer pool.
Methodology: GMV-weighted effective take rate across each seller's actual buyer mix, computed against public marketplace fee schedules as of January 2025. Calculator preview launches with the Studio plan — see how it's calculated.
The Workflow
What happens after you scan a barcode.
Four mechanical steps, running on the CheapSell sync engine. No background browser tabs, no spreadsheet copy-paste, no manual delist when something sells.
-
01
Scan or import
Hit a UPC with the iOS or Android scanner, batch-upload a CSV, or pull from an existing inventory file. The system resolves the title, brand, and category against a 2.6M-product reference table.
-
02
Push to nine markets
One click cross-lists to eBay, Poshmark, Mercari, Depop, Facebook, Etsy, Shopify, Grailed, and Kidizen — each formatted to that market's required schema (variations, measurements, hashtags, bundle pricing).
-
03
Auto-reprice every 4 min
The repricer watches 41M daily competitor listings across the network. When a competitor floors drop, your price floats down to the floor you set. When floors rise, your listing recovers its margin.
-
04
Mirror delists & sales
When an item sells on any one of the nine markets, the engine delists it on the other eight in under nine seconds. Refund flows, return windows, and inventory counts stay aligned across every channel.
Under the Hood
The data feed under the repricer, and the API under that.
For sellers who treat resale as operations: here's what the engine is actually looking at, and how to wire your own systems into ours.
The repricer data feed
Every four minutes, the CheapSell engine samples 41 million competitor listings across eBay, Poshmark, Mercari, Depop, Grailed, and Etsy to compute category-level floor and ceiling distributions. The repricer uses that distribution to position your listing between your minimum acceptable price and a market-aware ceiling — not a flat markdown.
The feed is global, refreshed 360 times per day, and weighted by recency. When you turn on the repricer for a category, you're not just lowering your price — you're writing a policy that says "stay within X percentile of the live market."
- Category-level percentile bands
- Recency-weighted competitor sample
- Floor / ceiling policy per SKU
- Manual override pin on any item
REST API & webhooks
Studio and Pro plans ship with a documented REST API and signed webhook delivery. Pull inventory, push custom reprice rules, subscribe to listing.sold and listing.delisted events, or pipe order data into your own warehouse. The same endpoint powers our iOS, Android, and web apps.
Auth is OAuth 2.0 with seller-scoped tokens. Rate limit defaults to 600 req/min on read endpoints, 120 req/min on write — both raise on request for sellers running their own tooling on top.
- OAuth 2.0 seller-scoped tokens
- Webhook events: 14 lifecycle types
- OpenAPI 3.1 spec, generated nightly
- Python, Node, and Go SDKs
Status · Last 90 Days
Live numbers from the integration network.
Pulled from the CheapSell operations dashboard. Refreshed daily at 04:00 UTC. If you're reading a stale copy of this page, the on-page figures won't match the live status page — that's the point.
eBay
99.99%
Poshmark
99.98%
Mercari
99.96%
Depop
99.94%
Facebook Marketplace
99.97%
Etsy
99.98%
Shopify
99.99%
Grailed
99.95%
Kidizen
99.92%