I’ve used it for years. It’s a lot better recently as the content grows. For example so many of my records are from mid 90s indie one hit wonders that weren’t on there…but as time goes by it gets better.
I too sold a chunk of my valuable records about 10 years ago. Just about the point vinyl was about to become cool again. Never trust me for financial advice.
Buying, never had a problem until recently. Some dickhead listed the record as a test press, which it turns out it wasn’t. He was indignant and said it was a mistake. But given the whole point of the site is to make it clear and easy to differentiate the different releases it doesn’t ring true. But that is one problem in about 300 purchases.
As someone above said, now vinyl is cool, and flippable, this does make discogs the perfect place for people to sell. Last week I lost out on an auction, and the person who won has listed it at 5x the price he won for. (it is the exact copy he won).