There's always going to be a few consumers that leave bad feedback no matter what. Even if the seller added a $100 bill in each package, they'd still bietch, so 100% good feedback isn't necessary required. But always look at price plus shipping, at least 98% good feedback, plenty of transactions and read the full description thoroughly word for word. If any of that seems out of place, find another seller. I always look at lead times also. With all that said, I've bought hundreds of items and only had one bad experience. It was resolved quickly by Ebay.