Walmart Cross-Marketplace — Source once, sell twice.
Every tracked Amazon ASIN, matched to its Walmart counterpart where one exists. Buybox status, seller counts, and price spreads on both sides — so you can spot the ASINs worth listing on the second channel without hand-matching a single SKU.
UPC-anchored matching, with a confidence score on every pair.
The hard part of Amazon ↔ Walmart matching isn't the matching — it's the honesty about confidence. UPC matches are clean when both listings carry the same UPC, but plenty of catalog rows are missing UPCs, carry the wrong one, or list a variant pack's outer UPC instead of the inner. A naive matcher will pair a two-pack with a single unit and quietly tell you about a $14 spread that isn't real.
We anchor on UPC where it exists, then validate every match against title-tokenized similarity, brand consistency, and pack-size detection. Each pair gets a confidence score; matches below threshold are flagged rather than silently included. The result is a corpus of high-confidence pairs you can act on, plus a transparent set of edge cases you can review manually if you care.
Once a pair is established, both sides are scraped daily — buybox holder, listed price, seller count, and inventory-availability signals on each marketplace. The spread isn't a one-time snapshot; it's a daily series, so you see whether an arbitrage looks structural or whether you're catching a temporary dislocation.
- Spot true cross-marketplace arbitrage — ASINs trading materially higher on Walmart than Amazon, with sellable inventory on Amazon-side wholesale.
- Find low-competition Walmart listings — products doing well on Amazon with two or fewer Walmart sellers, where being the third meaningfully improves win odds.
- Diversify off Amazon — your existing Amazon catalog, dual-listed on Walmart wherever counterparts exist, with the per-ASIN economics already worked out.
- Monitor brand-side leakage — when your Amazon-only brand shows up on Walmart via gray-market sellers, you see it first.
- Evaluate suppliers — supplier offers a wholesale price; check both Amazon and Walmart resale prices in one click before negotiating.
Most third-party Amazon resellers are single-channel by accident, not by choice. Listing on Walmart isn't hard — the catalog work is. You'd need to take your Amazon SKU list, hand-look-up the Walmart counterpart for each one, check whether it's worth listing, and import it. Most resellers stop after the first twenty SKUs because the manual work doesn't scale.
The cross-marketplace match collapses that to a filter. Sort your Amazon catalog by Walmart spread, descending. Listed SKUs disappear; unlisted SKUs with healthy spreads bubble up. You go from “maybe I should list on Walmart someday” to a prioritized 50-SKU import in an afternoon.
- Amazon resellers looking for a low-friction way to second-channel without rebuilding sourcing from scratch.
- Walmart-first sellers doing reverse arbitrage — find products with Amazon momentum and a thin Walmart listing.
- Brand owners tracking distribution across both marketplaces to spot unauthorized resale or channel conflict.
- Cross-marketplace operators who already sell on both and want consolidated reporting.
| Plan | What you get |
|---|---|
| Scout (free) | Walmart spread visible on top picks; full table gated |
| Sourcer | Full Walmart match table for 1 category, daily refresh |
| Brand Owner | 5 categories, spread history, alert on new Walmart listings of your brand |
| Portfolio | Unlimited categories, bulk match API, custom thresholds |
See the full pricing breakdown for limits and add-ons.
What percentage of Amazon ASINs have a Walmart match?
In our tracked categories, roughly 35–55% of the top BSR slice has a confident Walmart counterpart. The number varies by category — Beauty and Health are high; some Home subcategories are lower.
How do you handle pack-size mismatches?
Pack-size detection runs on both titles. If we can't resolve the inner-versus-outer pack ambiguity, the match is flagged low-confidence and excluded from default sorts. You can opt into the flagged set if you want to review manually.
How fresh are the Walmart prices?
Daily, same cadence as the Amazon observation run. Both sides land overnight UTC.
Can I export the match table?
CSV on Brand Owner and above. Programmatic API on Portfolio.
Does it work on Walmart-first inventory?
Yes — search either side. Walmart ASINs match back to Amazon counterparts using the same UPC-anchored, title-validated pipeline.
See your Amazon catalog matched to Walmart in one view.
The Sourcer tier opens the full match table on your primary category. Free during beta — start with the picks you already have.