How do you report a seller on eBay who is constantly ending their items?

Ok so this user

has recently posted a bunch of records for sale. I’ve followed 4 of the items I was interested in and noticed they ended them early. What is going on here? Is it just because they aren’t liking how cheap they’re going to sale for? How do I report this? I don’t think it’s fair that people are investing their time in bidding and having it end abruptly. At the same time, buyers have an obligation to pay and can suffer from negative reporting if they don’t hold their end up the bidding bargain.

The reason I want to report this is because I’m an eBayer and this sort of practice goes against the point of eBay, which is that the opportunity to bid and get items for cheap is what eBay is all about.