also, you can load your collection in Discogs....at my advancing age, this keeps the repeat buys down....I've been going through this exercise and have been putting together a bunch of records to sell. Unfortunately, I'm finding out that I've gotten a lot more picky and have been... you guessed it, buying another copy to replace a less than stellar one.
This is going to take a while. I'm almost at the end of the letter B.