How to find eBay listings to flip on Amazon, step by step

Short answer

Start from products you know on Amazon, search eBay for each one using the words sellers actually write, filter to the condition and form you can sell, and run the fee math on every candidate. A listing deserves a closer look only when its total cost leaves the profit you decided on in advance.

Step 1: start from the Amazon side

Do not open eBay first. Open your list of Amazon products and note, for each one, the model number, the form you sell, the price you can expect over a few weeks, and the fees. Then work out your ceiling: the most you can pay in total and still clear your line.

Invented example, US dollars

Amazon price you expect          120.00
- fees (referral + fulfillment)    26.00
= Amazon proceeds                  94.00

minimum profit you want            15.00
ceiling on total cost              79.00

ceiling on eBay asking price
= 79.00 - shipping 8.00 - prep 3.00 = 68.00

Now every eBay search has a target. Any listing asking more than 68.00 for this product is not a candidate, and you can skip it without a second look. That one number removes most of the browsing.

Step 2: search the way sellers write titles

eBay titles are written in a hurry by people who may not know the product well. Search for what they actually type, not for the official product name.

• Search the bare model number, then the model number with the brand, then the brand with the product type.
• Try the number without dashes or spaces, and with them, since sellers write both.
• Try common misspellings of the brand and the product type.
• Sort by newly listed, so you see what has just appeared instead of what has sat for weeks.

Keep a note of which search phrases turned up real matches for each product. After a few weeks you will have a short list of phrases per product, and that list is what you would hand to any tool or helper that does the watching for you.

Listings that omit the model number are often missed by other buyers. They are also the hardest to match, so give them extra care, and ask the seller for a photo of the label if the item details are silent.

Step 3: filter for the form and condition you can sell

Use eBay's filters to cut the list before you read it. Choose the condition you plan to sell in, and use the item location and delivery filters if shipping time or cost matters to you.

1. Pick the condition that matches what Amazon lets you list. Treat “open box” and “new other” as used unless the photos settle it.
2. Exclude words that signal a different item: “for parts”, “untested”, “case only”, “charger only”, “lot of”.
3. Check whether the listing is a bare item, a kit or a bundle, and compare it to the Amazon item you sell.

Our guide to reading power tool model numbers shows how one suffix can turn a bare tool into a two-battery kit, which is exactly the mistake this step is meant to catch.

Step 4: run the math on every candidate

For each listing that survives, write the total cost, not just the asking price. Include eBay shipping to you, sales tax if you pay it, and your prep and inbound costs. Here is a second invented example, with one listing that passes and one that does not.

Invented example, US dollars

Listing A
asking price             62.00
+ shipping                8.00
+ prep                    3.00
= total cost             73.00
profit = 94.00 - 73.00 = 21.00   clears the 15.00 line

Listing B
asking price             66.00
+ shipping               14.00
+ prep                    3.00
= total cost             83.00
profit = 94.00 - 83.00 = 11.00   does not clear it

Listing B has a slightly higher price and much higher shipping, which together push it past your ceiling. A price that looks fine in the search results can fail once shipping is added, so always compare total cost.

Step 5: confirm the match and the seller before you buy

A candidate that passes the math still has to be the right item. Read every photo, read the description for hedging words, and check the seller's feedback. If anything is unclear, ask a question or move on.

• The label or item specifics show the exact model number you expect.
• The photos show the parts the Amazon listing says are included.
• The condition words fit a condition you may sell in your category.

Then keep records: the eBay order confirmation, the payment, the tracking number and the date. Amazon can ask where inventory came from, and receipts from eBay are not retail invoices. Read Amazon's current rules for your category and start small. This is not legal advice.

When searching by hand stops scaling

This method works, and for a handful of products it is all you need. It gets harder as your list grows, because new listings appear all day and the same searches need repeating. That is where eBay's own saved searches help with the keyword part, and where profit-based alerts help with the rest.

MarginPing does the repeating part for power tools and tool kits you already sell. It watches new eBay listings for the products on your list, matches by the model number in the title and by UPC when there is one, reads kit versus bare tool and lot size, and sends a Telegram message when estimated profit after Amazon fees clears your line. Amazon prices and fee estimates refresh several times a day, and no Amazon connection is needed. It never buys, bids, or messages a seller.

MarginPing is in final testing and not open for signups yet. At launch: $100 a month for up to 20 products. Starts with a free 7-day trial, no card needed, when we open.

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