Avoid the super shiny LPs. Someone just sprayed them with some Tire shine or other crap. They are super shiny, so You can get to know the look. Once you see one, you'll know what I mean. Even really crappy worn out records superficially look good when 'shined up'.
I've run across "shiny" LPs quite a bit in my travels - they look so "unnatural" I avoid at every turn. Even after multiple washings a record will never shine like this not to mention sound any good.