Agents compare your listing with every other seller of the same item.

---
title: Agents compare your listing with every other seller of the same item.
canonical: https://chosenbyagent.com/for/sellers
updated: 2026-10-22
audiences:
  - sellers
offers:
  - B1
  - B3
  - B4
  - B5
  - B6
  - B7
description: Whether AI assistants show your marketplace listings or a competitor’s, and why they pick another seller — for dealers, agencies and shops on marketplaces.
---

# Agents compare your listing with every other seller of the same item.

For Sellers

You compete on the shelf. When a buyer asks an assistant for an item that ten sellers offer on the same marketplace, the assistant shows a few of them and recommends one. It weighs price, rating, reviews, delivery and returns differently from people, and it does not tell you why you lost.

We run your buyers’ questions through the main assistants, check whether your listings appear with the right price and a working link, and show what moved the choice — so you know which detail to change. Start with a free snapshot of ten buyer queries.

## Where agents choose for you

- **Level 2 · Listing** — Which listing and seller to show. Sellers compete inside a marketplace; the platform owns the shelf.
- **Level 3 · Product** — Which product or brand to pick. Brands and sellers compete within a category.

## Your questions

### Which platform or store to open

Level 1 · Channel. Marketplaces compete with each other and with brand stores.

- [Q08 · What changed after the last model update?](/questions/what-changed-after-the-update.md) — Marketplaces, Sellers, Brands · A6 Monitoring · from €800 (per month)

### Which listing and seller to show

Level 2 · Listing. Sellers compete inside a marketplace; the platform owns the shelf.

- [Q02 · Do assistants show my listings correctly?](/questions/are-my-listings-shown-right.md) — Marketplaces, Sellers · A2 Routing & listing audit · from €2,500 (one-off)
- [Q09 · Why does the agent pick another seller’s offer for the same item?](/questions/why-does-the-agent-pick-another-seller.md) — Sellers · B7 Listing visibility check · from €900 (one-off)
- [Q10 · Do AI assistants show my listings on marketplaces at all?](/questions/do-assistants-show-my-listings.md) — Sellers · B7 Listing visibility check · from €900 (one-off)

### Which product or brand to pick

Level 3 · Product. Brands and sellers compete within a category.

- [Q06 · Which brand does the agent pick — and why?](/questions/which-brand-does-the-agent-pick.md) — Brands, Sellers · B3 Choice test · from €3,000 (per category)
- [Q07 · What changes if I change price, returns or copy?](/questions/what-if-i-change-the-offer.md) — Brands, Sellers · B4 Offer lab · from €1,000 (per experiment)

## Services and prices

- **B1 Agent snapshot** — Free. One scenario, three models, about 30 runs — where the path through your store breaks, or how assistants show your listings on a marketplace.
  - For: Brands, Sellers
  - One buyer scenario on your store, or 10 buyer queries for your marketplace listings
  - Three models, about 30 runs
  - Answers: [Q05](/questions/can-an-agent-get-through.md), [Q10](/questions/do-assistants-show-my-listings.md)
- **B3 Choice test** — from €3,000 (per category). Who wins your category and why — on the open web or inside a marketplace; mentioned versus chosen, sensitivity to price, reviews and returns.
  - For: Brands, Sellers
  - 3–5 scenarios, 3–4 models, several personas
  - Mentioned versus chosen
  - Sensitivity to price, reviews and returns policy
  - Confidence intervals; reported as an index, not market share
  - Answers: [Q01](/questions/where-do-assistants-send-buyers.md), [Q06](/questions/which-brand-does-the-agent-pick.md)
- **B4 Offer lab** — from €1,000 (per experiment). Test copy, price, returns or badges before you ship them.
  - For: Brands, Sellers
  - One change tested against your current offer
  - Enough runs to detect a 2.5-point shift
  - Answers: [Q07](/questions/what-if-i-change-the-offer.md), [Q09](/questions/why-does-the-agent-pick-another-seller.md)
- **B5 Monitoring** — from €600 (per month). Repeat the access audit, choice test or listing check after major model releases, with history by version and alerts.
  - For: Brands, Sellers
  - Re-runs of B2, B3 or B7 after major releases
  - History by model version and alerts
  - Answers: [Q08](/questions/what-changed-after-the-update.md)
- **B6 White-label for agencies** — from €300 (per client per month). A cabinet per client of your agency — brands and marketplace sellers — with B2–B5 and B7.
  - For: Brands, Sellers
  - A cabinet per client
  - B2–B5 and B7 under your brand
- **B7 Listing visibility check** — from €900 (one-off). Whether assistants show your listings on marketplaces — or a competing seller's — and whether price and link are right.
  - For: Sellers
  - 20–40 buyer queries in one market, three assistants
  - Shown versus chosen against competing sellers of the same item
  - Price, availability and deep link checked live
  - What moved the choice, and what to change in your listings
  - Answers: [Q02](/questions/are-my-listings-shown-right.md), [Q09](/questions/why-does-the-agent-pick-another-seller.md), [Q10](/questions/do-assistants-show-my-listings.md)

[Agency? Run these for your clients](/for/agencies.md)

## Tell us what you want tested.

Audits and pilots get a scope, a fixed price and a start date. The free snapshot comes straight to your inbox.

Agents: POST /api/engagements (application/json) with {"offer_id": "B1", "on_behalf_of": {"email": "…"}, "agent": {"name": "…"}}. offer_id for this page: "B1" Agent snapshot (free); "B3" Choice test; "B4" Offer lab; "B5" Monitoring; "B6" White-label for agencies; "B7" Listing visibility check. The person confirms by email before we see the request. Details: /agents.md