Search "bat" on eBay. Now search "bats." You will get two different sets of results. This is not a bug. It is how eBay's search engine is built, and understanding it puts you ahead of most collectors on the platform.

1. eBay Does Not Stem Words

Most search engines automatically connect related word forms. Type "run" and you get results for "running," "runs," and "runner." This is called stemming. eBay does not do this. It matches the exact word you typed against the exact words in the listing title.

A listing titled "ACEO Original Watercolor Bats at Dusk" will appear when you search "bats." It will not appear when you search "bat." The engine sees them as two completely different words. Same subject, invisible to half the searchers.

2. The OR Operator: Search Both at Once

eBay supports a grouping syntax that lets you search multiple terms at once. Wrap comma-separated terms in parentheses and eBay will return listings that contain any one of them.

This returns everything. Listings with "bat" and listings with "bats" appear in a single results page. You stopped competing with yourself.

The same technique works for any word with multiple common forms. A few examples worth bookmarking:

3. Exact Phrase Matching

Quotation marks tell eBay to find that exact sequence of words in that exact order. Useful when you are hunting a specific style or format that spans multiple words.

Without quotes, a search for ACEO folk art would return listings containing "folk" and "art" anywhere in the title, in any order. With quotes it requires the exact phrase together, which cuts noise significantly.

4. Exclusion Terms

The minus sign removes listings containing a word. This is the single most useful operator for ACEO collectors because the category is flooded with prints, reproductions, and sports cards that keyword-stuff their titles.

Stack as many exclusions as needed. There is no practical limit. The more noise you eliminate upfront, the faster you find real originals.

5. Combining Everything

A fully built search query looks intimidating but each piece has a job. Here is a complete example for hunting original bat artwork:

The last three exclusions remove sports cards that use "bat" as equipment. Without them you get baseball cards. With them you get flying mammals in watercolor.

Stacks Of runs these exact techniques on every category page. The exclusion list we use strips thousands of irrelevant listings automatically so you don't have to. But knowing how it works means you can take the same approach directly on eBay for any subject we haven't built a category for yet.