How to find items to flip on eBay

Where the margin comes from

Buying on eBay to sell on eBay, sometimes called eBay arbitrage, only works when you add something the first seller didn’t. The usual sources of margin:

• A better listing. The right title, the model number, complete item specifics and clear pictures can sell the same item for more.
• Testing and cleaning. “Untested” sells at a discount; “tested, works” doesn’t. A dusty item sold as found goes for less than the same item cleaned up.
• Splitting lots. A seller clearing a collection lists it as one lot; you sell the good pieces one by one.
• Completing sets. Missing parts, manuals and accessories can be paired into complete items, which sell for more than the pieces.
• Timing. Seasonal items bought out of season and sold in season: ski gear, Halloween decorations, pool equipment.

If you can’t say which of these applies to a purchase, the profit depends on luck.

Work out your max buy price

Every Spotter you source with should have a maximum price you’ve calculated, not guessed. Start from what it will sell for and subtract:

1. Expected sale price. Filter eBay to Sold items, match the condition and completeness, and use where most recent sales land. Leave out sales shown crossed out with Best Offer accepted, since the real price was lower.
2. Minus eBay’s fees. Look up the final value fee for the category you’ll sell in on eBay’s fees page, and add the per-order fee and any promoted listing fee you plan to pay. The fee is worked out on the total the buyer pays, not just the item price, so estimate it on that.
3. Minus outbound shipping and packing supplies, if you offer free shipping or charge less than postage costs.
4. Minus your profit. Set a minimum in dollars that makes the time worth it, not only a percentage. A small item with a thin margin isn’t worth an hour of cleaning, listing and packing.
5. Minus what it costs to get it to you: the shipping on your purchase and any sales tax you pay.

One Spotter per product line

A product line is a group of items you know well enough to price at a glance and sell with confidence. Give each one its own Spotter and its own maximum, so a cheap item and a valuable one aren’t judged by the same number. Think of each Spotter as a flipper alert for one line.

Keep lots out of your single-item Spotters by adding lot to Exclude, and give lots their own Spotters.

Setting up many product lines

Building a dozen Spotters by hand takes time, and Spotter Otter has quicker ways in:

• Paste a link. Paste a live eBay listing for a product line that sells well for you, or a store’s product page, and Spotter Otter starts a Spotter for the same item. Add your max buy price.
• Describe the line in a sentence. Write something like Patagonia Synchilla Snap-T, men’s large, under $35, and Luna, Spotter Otter’s AI, turns it into a search and must-haves you confirm. A maximum price is required, which suits a max buy price you’ve already worked out.
• Photograph what sold. Before you ship a winner, take a photo of its tag, box label or model plate. Spotter Otter reads the brand, model number or style code and writes a description to check, so restocking the same item is one step.

Sizes and other must-haves are checked against the wordings sellers use: Large is also L, LG or Lrg, and 30x32 is a 30 waist with a 32 inseam. A listing that states a different size is left out; one that doesn’t say comes through as a Maybe match, so you can check the measurements in the pictures yourself.

Lots and bundles

Lots are where resellers often find the widest margins, and where it’s easiest to overpay.

• Search the words lot sellers use: lot, bundle, bulk, collection, estate, by the pound. A Spotter like DS games lot or LEGO bulk with a maximum catches them.
• Value only what you can see. Count the pieces in the pictures and price the two or three best from sold listings. Treat the rest as a bonus, not part of the sum.
• Price your time. Twenty items mean twenty listings, twenty packages and twenty chances of a return. Leftovers that won’t sell alone can go back out as a smaller lot.
• Watch for picked-over lots. Words like common, mixed or mostly, and pictures where the valuable pieces are conspicuously absent, often mean someone has already taken the best.

Keep alert volume manageable

A few well-tuned Spotters beat a pile of noisy ones. If you can’t act on an alert, it’s noise.

• Use a minimum price. It removes accessories, empty boxes and single parts that share an item’s name.
• Exclude your repeat offenders. After a week, read the alerts you ignored and add their common words to Exclude.
• Match check frequency to the line. Give fast-selling lines the most frequent checks your plan allows; slow, rare lines can be checked less often.
• Get a daily round-up. The optional daily report email summarises the day’s matches across your Spotters, which suits slower lines.
• Treat a pause as a signal. A Spotter that matches more than 100 new listings in a day pauses itself. That search is too broad: split it by model or raise the minimum.
• Start seasonal lines later. Set a Spotter to start later, so it begins watching when you’re ready to buy for the coming season.
• Review every month. Keep the Spotters that led to profitable sales; rework or delete the rest.

Before you buy to resell

• Check sell-through. Compare how many sold recently with how many are listed now. Many active listings and few sales means you’ll be waiting.
• Know the fakes. If you can’t tell genuine from counterfeit in a category, don’t source it yet. Where eBay’s Authenticity Guarantee applies, items you sell may be checked before they reach your buyer, so a fake you bought becomes your loss.
• Read condition notes closely. A missing battery door or a non-original part can turn a flip into a parts sale.
• Pay through eBay checkout, so the purchase keeps eBay Money Back Guarantee protection if it arrives not as described.