Take feedback with dose of skepticism on eBay
eBay sellers have a ‘feedback’ rating which acts as a useful guide to whether they’ve dealt fairly in the past. As a guideline, look for a seller with over 98% positive feedback, and a high feedback score of at least 30.
Never buy an expensive item from a seller with zero feedback, as it means they’ve never sold before.
Remember that feedback is useful but not infallible. One thing to watch for is traders flogging a few tiny things for 10p each to build their feedback, and suddenly listing 15 mobile phones at £100 a pop.