Every number we publish is defined here — what it counts, where it comes from, and what it explicitly does not claim. If a figure on our site is not covered on this page, treat it as unverified and email us before citing it.
Last reviewed 23 October 2026
Aggregated, anonymised transaction and advertising data from consenting client cohorts, cross-checked against public platform statements. Each report states its own sample size and collection window on the page.
Every entry is derived from one of three sources, named in the entry itself: (a) aggregated anonymised client cohort data, (b) SW Cybernetics analysis of public third-party market reports, or (c) platform-published figures. Entries labelled 'analysis' are estimates, not measured totals.
Mixed-source: third-party market sizing is attributed inline to the publishing house; operational benchmarks (ACOS, TACoS, IPI, return rates) come from the SW Cybernetics client dataset.
Fee logic is transcribed from each marketplace's published rate card as at the version date shown in the tool. Marketplaces change rate cards without notice — always confirm against your own seller dashboard before pricing decisions.
Research findings and the stat library are published as CSV/JSON under the same CC BY 4.0 licence as the pages themselves.
Email the research desk with the exact figure and we will send the underlying cut, the sample definition, or a correction if we got it wrong.
contact@swcybernetics.inSee also: corrections policy · newsroom · media kit