How to catch sneaker deals on eBay before everyone else

Sneakers are one of the most heavily watched categories on eBay. Every popular model has a known resale price on StockX and GOAT, which means every buyer and reseller knows within seconds whether a listing is under market. When a pair goes up at a fair price, the first person to see it buys it, and on a well-known release that person is usually a reseller running a search sorted by newly listed and refreshing all day.

Size makes it worse. If you wear a 13 or a 7, the pairs you can actually use appear far less often, and when they do there is still a reseller who will buy them to flip. Refreshing a search all day waiting for one is not patience, it is a second job.

Alerts turn the game around. A monitor that searches for the model, colorway and size, capped at your price, running every minute, does the refreshing for you and only speaks when a pair matches. Most alerts arrive within about 15 to 45 seconds of the listing going live, which is early enough to be the first buyer more often than not. eSnipe does this for free with no eBay login, and it never buys for you; the alert links to the listing and the purchase is yours on eBay. The rest of this guide is about writing that monitor so it finds the right pairs and skips the rest.

eBay has a size filter, but sellers do not always fill in the size item specific, and a listing with no size set does not appear when you filter on size. Sellers do, however, almost always put the size in the title, because buyers scan for it. So the reliable approach is to put the size in your keywords, in the form sellers use: “Jordan 4 Bred Size 11”, “Dunk Low Panda 10.5”, “New Balance 990v6 Grey 9.5”.

Size phrasing varies more than you would like. Common forms include “Size 11”, “Sz 11”, “US 11”, “11 US”, “Men's 11” and just “11” next to the model name. Because keyword matching is a phrase, a monitor for “Size 11” will not match “Sz 11”. The practical answer is two or three monitors per pair, one for each common phrasing in your market, all sharing the same price ceiling and negatives. Since monitors are unlimited, this costs nothing but a minute of setup.

Watch out for adjacent sizes: “Size 11” also matches “Size 11.5”, because the text contains it, so add the half size as a negative if you cannot wear it. And a “Size 9” listing could be men's or women's, so read the title for “W” or “Women's” before you get excited.

Model names are ambiguous. “Jordan 4 Black” could be Bred, Black Cat, Military Black, Thunder or a dozen others, and a monitor on the model name alone will alert on all of them. Two things narrow it down: the colorway nickname and the SKU. The nickname is what most sellers use in titles (“Bred”, “Panda”, “Chicago”, “Grey Fog”), so it should be in your keywords. The SKU is the style code printed on the box label, such as “DH6927-017”, and sellers who know what they have often include it.

Use the nickname as your primary monitor and the SKU as a second one. The SKU monitor catches sellers who list the pair by code only, which is common among consignment stores and resellers clearing inventory, and those listings often get fewer views because casual buyers search by nickname. A SKU monitor with the size in the keywords is one of the quieter, higher-quality searches you can run. Where the retro year changes the price, as with a 2011 versus 2016 Jordan 1 Bred, put the year in the keywords and run one monitor per year with its own ceiling.

Sneaker condition has its own vocabulary and sellers use it loosely. Deadstock or DS means unworn with the original box and everything that came in it. VNDS means very near deadstock, usually tried on or worn once. Then there is “worn twice”, “lightly used”, “8/10”, “beaters” and everything in between. eBay's condition filter is coarser: New with box, New without box, New with defects, and Pre-owned. The two systems overlap but do not map cleanly, and a “DS” pair listed as Pre-owned because the seller ticked the wrong box is a real thing that happens.

For a new-only monitor, set the condition filter to new and put “DS” or “Deadstock” in a second monitor's keywords without a condition filter, so you catch pairs the seller described as deadstock but filed under Pre-owned. For a used monitor, set Pre-owned and rely on price and photos rather than the condition words, which are unreliable. Whichever you run, the ceiling is what makes the monitor useful: a deadstock ceiling should sit under the StockX or GOAT lowest ask, and a used ceiling should sit well under it, because a used pair with no box has no authentication trail and less resale value. Read the photos before you buy, every time: the box label, the size tag inside the shoe and the soles tell you most of what you need, and stock photos alone mean you are taking the seller's word for it.

eBay runs a program called Authenticity Guarantee for sneakers. Under it, eligible pairs are shipped to an authentication partner before they reach the buyer, and the pair arrives with a tag confirming it passed. eBay decides which listings qualify and publishes the eligibility rules; check there for specifics, because the details change. What matters for a buyer is that a listing covered by the program has an independent check between the seller and you.

That check does not tell you anything about the price. A pair can be authenticated and still overpriced, and the pairs that are mispriced below market are just as likely to be covered as anything else. So the program should not change how you write monitors; it changes what you do when an alert arrives. If the listing is covered, your risk is mostly about condition and fit. If it is not, you are relying on the seller's photos, feedback and returns policy, and the discount you accept should be larger to reflect that. Either way, the program does not remove the need for negative keywords; the list below is still the first line of defence.

StockX and GOAT publish the last sale and lowest ask for most pairs by size, and those numbers are the most honest benchmark for what a pair is worth today. Take the last few sales in your size, not the overall average, because size premiums are real: a size 13 in a popular model can trade at a large premium over a size 10, and small sizes in others do the same. Then look at eBay's own sold listings for the same pair and size, which often run a little under StockX because eBay buyers are not paying the platform's fees on top.

Your ceiling should sit under both. A useful rule is to set the Buy It Now ceiling at roughly ten to twenty percent below the StockX last sale in your size for deadstock, and further below for used pairs depending on condition. That produces alerts you would act on immediately rather than a stream of listings at market price. Remember that the alerted price is the item price; shipping on sneakers is often ten to fifteen dollars and the seller's tax situation may add more, so include a buffer. Re-check comps regularly, since restocks and retro announcements move prices, and a ceiling set in March can be permanently silent by June.

Sneaker searches attract three kinds of noise: replicas, sizes you cannot wear and accessories. Replica listings are often labelled honestly with words like replica, rep, UA or “unauthorized authentic”, and sometimes dishonestly with nothing at all, which is where photos and the Authenticity Guarantee come in. The honest ones are easy to exclude. Custom and painted pairs are a separate market and rarely what a size-and-colorway search is after.

Kids' sizes are the biggest source of false alerts on popular models. GS (grade school), PS (preschool) and TD (toddler) versions share the model name and colorway and are priced far lower, so an alert for a “Jordan 1 Chicago Size 7” at a great price is very often a GS pair. Add all three abbreviations as negatives on adult monitors, plus the spelled-out versions. If you actually fit GS sizing, run a dedicated GS monitor instead.

Accessories and packaging round out the list: box only, laces, shoe trees, replacement boxes, receipts and keychains all carry the model name. And be careful with short terms. “rep” as a negative will match “replacement” and “represent”; use “replica” and “reps” instead and accept that a seller writing “rep” alone will get through. “box” as a negative removes “with box”, which is exactly what you want to see; use “box only” instead.

Suppose you want a deadstock Jordan 4 Bred Reimagined in a size 11 and the StockX last sale in that size is around two hundred and forty dollars. Start with a nickname monitor: keywords “Jordan 4 Bred Reimagined Size 11”, listing type Buy It Now, condition new, maximum price two hundred, negatives from the list above plus “11.5”. Add a second monitor with “Sz 11” in place of “Size 11”, and a third on the SKU, “FV5029-006 11”, with no condition filter, so you catch inventory-clearing sellers who list by code. Route all three to one Discord channel named after the pair and turn on push for the two nickname monitors.

Then tune it. Every alert you would not open teaches you a negative keyword; every pair you spot on eBay that did not alert teaches you a filter that was too tight. Within a week the channel is quiet except when it matters, and when a size 11 lands under two hundred you find out about half a minute after the seller hits publish. What you do then is on eBay: check the photos, check the seller, and buy it before the reseller who was refreshing does.