record collectors/record collecting/ e bay

Check out Discogs dot com for used LP's and CDs. It's a worldwide site, but there are many good sellers in the US and UK. Accurate grading; I've had very good luck buying there.
Collectables are expensive, but mass produced issues can be very inexpensive.

I've found some good sellers on Ebay. For used vinyl I check all items they have for sale to make sure they are not records pulled from the garbage pile and also check their past sales.
The good sellers will have a consistant amount of quality vinyl.

I've returned a couple of LPs and the sellers had no problem with that.
There are sellers to avoid, but I dont understand the term "Redneck hillbilly record dealers."