operator_compare
Compare two sellers head-to-head on shared ASINs: see buy-box winner, price gap, and revenue-at-risk. Identify uncontested high-revenue ASINs each seller wins that the other doesn't carry.
Instructions
ASIN-level buy-box head-to-head between two operators (sellers). For the ASINs BOTH carry (contested), returns who holds the buy-box (winner), each operator's buy-box share, their sanitized average prices and the price gap, how many OTHER sellers are on the listing, whether Amazon holds the box, and a situation tag (amazon_in_box | reseller_swarm | tied_price | price_gap) — plus operator_a's estimated 30-day revenue-at-risk. Also returns each side's WHITESPACE: high-revenue ASINs that operator wins which the OTHER doesn't carry (expansion targets). Use when the user asks 'compare seller A vs seller B', 'where do these two sellers overlap / compete', 'who wins the buy-box between them', 'show me the head-to-head', or 'what does A sell that B doesn't'. Sortable by revenue-at-risk (default), price gap, or share gap.
Input Schema
| Name | Required | Description | Default |
|---|---|---|---|
| operator_a | Yes | First operator/seller name (the focal seller — revenue-at-risk + situation are from A's view). | |
| operator_b | Yes | Second operator/seller name. | |
| marketplace_id | No | 1 = Amazon UK, 2 = Amazon US (default). | |
| limit | No | Contested ASINs to return (default 25, max 100). This tool pages. | |
| sort | No | Sort the contested list: revenue_at_risk (operator_a's 30d revenue at risk, default), price_gap (abs A-vs-B price gap), or share_gap (abs buy-box share gap). | |
| min_est_revenue_30d | No | Only contested ASINs with estimated 30-day listing revenue >= this. | |
| contested_only | No | If true, skip the whitespace sections (only the head-to-head contested list). | |
| include_whitespace | No | Include each side's whitespace ASINs (default true). | |
| whitespace_for | No | Which side's whitespace to compute (default both). | |
| brand | No | Optional — scope the comparison to a single brand's ASINs (catalog sizes, contested, and whitespace are all limited to that brand). Omit for all brands. |