How to See Who Is Selling on Amazon (and What They Really Charge)

Ask ChatGPT who is really selling an Amazon listing, and at what price. Try TinyFish free. New accounts start with $8 in Wallet funds.

TL;DR

If you sell anything that also lives on Amazon, you need to know how to see who is selling on Amazon for a given listing, and what a shopper actually pays. The "sold by" and "ships from" lines tell you whether you're up against Amazon itself, a third-party seller, or a seller using Amazon's warehouses. The price on the page can be muddied by list prices and card sign-up offers.

This guide gives you one tested prompt. Paste in a product link, and ChatGPT (with the TinyFish app) opens the real page and reports the seller, the shipper, the real purchase price and the specs, without signing in or buying anything.

A quick disclosure: I work at TinyFish, which gives ChatGPT and Claude live web access, including a browser agent that can open real web pages for you.

What you need

• ChatGPT or Claude. You ask in plain English, the same way you'd ask a colleague.
• The TinyFish app. Install it once by following the plugin docs. After that, TinyAgent, the TinyFish browser agent, opens the Amazon page in a real cloud browser and reports back what it sees.
• A product link. Copy the URL of the exact listing, with the size or colour you care about selected. No Amazon login needed.

How to see who is selling on Amazon: sold by vs ships from

Every Amazon listing shows two names under the buy button. Amazon's own help page explains the three combinations you'll see (Amazon):

• Sold by a seller, ships from that seller. A third-party business sells the item and ships it themselves.
• Sold by a seller, ships from Amazon. A third-party business owns the stock, but it sits in Amazon's warehouses. This is Fulfillment by Amazon, or FBA, where Amazon picks, packs and ships orders and handles returns for the seller (Amazon).
• Sold by Amazon, ships from Amazon. Amazon itself is the retailer.

Why it matters: competing with Amazon itself is a very different fight from competing with another small seller. And Amazon notes that when several sellers offer the same item, each sets their own price (Amazon), so the seller you see today may not be the seller you see tomorrow.

The prompt

Copy this into ChatGPT or Claude with the TinyFish app connected. Swap in your link.

Use TinyFish to inspect this exact Amazon.com listing: [product URL]. Report the selected ASIN and variant, title, brand, current purchase price, sold-by and ships-from names, dimensions and visible specifications. Distinguish the purchase price from list prices and card-application promotions. If the purchase price is not verifiable, say so. Read-only: do not sign in, add to cart or buy.

Here's a filled-in example. Say you run Harbor Coffee Roasters, an invented small roaster, and you want to check a rival's pour-over kettle:

Use TinyFish to inspect this exact Amazon.com listing: https://www.amazon.com/dp/B0EXAMPLE1. Report the selected ASIN and variant, title, brand, current purchase price, sold-by and ships-from names, dimensions and visible specifications. Distinguish the purchase price from list prices and card-application promotions. If the purchase price is not verifiable, say so. Read-only: do not sign in, add to cart or buy.

Three parts of the prompt do the real work:

• "This exact listing" and "selected variant." Amazon pages often bundle sizes and colours together. Asking for the selected variant stops the answer mixing up the 1-litre and the 1.5-litre.
• "Distinguish the purchase price." Amazon pages can show a crossed-out list price and a "save with this card" offer next to the price you'd actually pay. You want the one a shopper pays at checkout, not the marketing numbers around it.
• "Read-only: do not sign in, add to cart or buy." This tells the agent exactly where to stop. It looks, it reports, and it never touches a cart or an account. That makes it safe to run on any listing.

Watch it run in ChatGPT

Here is the tested prompt running in ChatGPT with the TinyFish app, sped up. You can see TinyFish open the site in a live browser, then ChatGPT write up the answer.

What you get back

A short report for one listing, usually as a list or a small table. You'll get the ASIN (Amazon's product ID) and which variant was selected, the title and brand, the purchase price with any list price or card offer called out separately, the sold-by and ships-from names, the dimensions, and the specs shown on the page.

Example output (invented business):

Reading that example: a third-party brand is selling, using FBA. Your real price comparison is $38.99, not $49.99.

If the agent can't confirm the purchase price, for example because the page only shows a range or "see options," it says so instead of guessing.

Tips and when it doesn't work

• It's a snapshot. Prices change, and they can differ by location and by variant. Treat the answer as "what the page showed when it was checked," not a permanent fact.
• One listing per prompt. You'll get cleaner answers checking one product at a time than pasting ten links at once.
• Long pages can run out of steps. Some listings are very long. If the agent stops before it finishes, run it again and ask for fewer fields, for example just price, sold by and ships from.
• Check your own listing too. The same prompt shows you whether your product is currently showing your business as the seller, and what price a shopper sees.
• Want it every day? For ongoing tracking, see how to track competitor prices and how to set up a Black Friday price tracker that emails you when a price moves.

On cost: new accounts start with $8 in Wallet funds, no card needed. Agent runs are billed per step, at $0.016 per agent step.

Want to see this live? We're running it at TinyFish Small Business Week, a free 45-minute live session on Thu Nov 19, 11 AM ET. Save your seat, and bring the job you want off your plate.

See any Amazon listing's real seller and price in one prompt. Start free on TinyFish.