Good online record stores?

So, I happily just got a record player for my birthday the other day (something that I have been wanting for a very long time.) Now, I know that here in NYC, there are many good record stores that allow you to buy old vinyls, listen before buying, as well as talking about music with others as well. But, I was wondering if anyone knew of a good reputable place online where I can get some as well. I feel that going to one of the many vintage record stores here in the city is great if you just want to get/see what's available. But, I was wondering if anyone knew of anyplace good online that isn't Ebay that I can go to if I am looking for a particular album.