A good eBay price check starts with exact product identity
A search result that shares the same brand or product family can still be the wrong comparison. Generations, Pro or Plus variants, storage capacities, regional versions, collector numbers and technical revisions can materially change value. Accessories can also contain the host model name even though the main product itself is not being sold.
Kjøpsvakten therefore uses model, variant, product role, condition and sale-form evidence when it filters eBay candidates. Missing evidence can stay unknown; explicit contradictions should not be ignored just because the title contains similar words.
Active eBay listings show asking prices, not confirmed sale prices
The automatic market comparison uses relevant active eBay listings. These are useful current asking-price references, but they are not evidence that an item actually sold at that amount. A seller can ask too much, and local demand, shipping and taxes can change the real purchase decision.
For that reason Kjøpsvakten describes the result as price evidence and confidence rather than claiming to know one universal “true market value.” If the comparison set is weak or too broad, the system is designed to suppress a categorical percentage verdict.
Bundles, kits and accessories must stay separate
A camera body should not be priced against a camera-and-lens kit. A drone aircraft should not be priced against a battery, controller or replacement frame. A single item should not be mixed with a multi-pack or a collection with an unknown quantity.
Exact-model wording is useful evidence, but it must not be allowed to rescue a different sold subject or incompatible sale unit. This is why Kjøpsvakten can sometimes show fewer references than a raw eBay search: precision requires stronger comparability than simple keyword overlap.
Use the comparison as decision support, then inspect the listing itself
Price is only one part of a used purchase. Review the seller description, condition, included components, photos and missing information. Ask questions that fit the product and check the payment and delivery protections available for the transaction.
When the data supports it, Kjøpsvakten can provide a tighter eBay comparison. When it does not, lower confidence is the correct result. The goal is to avoid a confident-looking median built from the wrong products.