CompSniper
Original data

CompSniper Research

Documented marketplace samples, reproducible collection code, downloadable aggregate data, and limitations you can inspect before citing a result.

Featured study
100
product searches
19,220
raw priced rows
7,278
rows classified out
37.9%
weighted removal
August 31, 2026

What relevance cleaning changed across 100 eBay sold-comp searches

Five categories, one predeclared protocol, 100 successful production requests, raw-versus-cleaned medians, category comparisons, outliers, Best Offer limitations, and a downloadable CSV.

Read the study

Predeclared sample

Products and filters were fixed before collection, not selected after seeing results.

Reproducible code

The bounded collector, product list, and analysis script are published in GitHub.

Citeable evidence

Each report includes dates, sample sizes, calculation definitions, data downloads, and limitations.