On the header section of a store, the amount of feedback a seller has is shown in brackets, along with a summary of their feedback. Clicking on either the number or the summary will show their feedback profile. The first table on this page shows a count for each type of feedback for the last week, month, year, and all time. To the right of that is the breakdown of feedback based on if the seller was a buyer or a seller (Bricklink sellers can but from other sellers, just like any other account). The most recent feedback is shown below that.
Although the overall score is a good indicator, it’s always worth checking recent feedback as well; if a seller makes changes how they run their store to the detriment of customer satisfaction, their recent feedback will reflect this but the overall score won’t.
Bricklink, like any marketplace, is susceptible to scammers. One of the more common scams on Bricklink usually involves setting up a store with a large amount of desirable parts, minifigures, or sets with prices much lower than average. Once they have received a few big orders (or lots of small orders), they usually lock their store with a message claiming they’ve had a family emergency or similar and say they will process the orders soon. So if a store seems too good to be true, it probably is.
As with any feedback system, personal judgement should be used; if you’re uneasy using a particular seller for whatever reason, consider finding a seller you are more comfortable with.
Next: Now you know if a seller is trustworthy, check out the how to buy from a store guide.