if you don't preorder a game, what is the best way to buy it brand new so it "counts"?

i tend to buy a lot of games that end up barely getting translated or made in the us and i know it's just one copy, but i try to make sure i buy them brand new and preorder so the companies know people are interested. i missed out on preordering something a while ago, so is there anyone who might know the most effective way to buy something that isn't a digital download brand new? i'm not particularly fond of gamestop so i was thinking play-asia since they have american releases too and i know i'm over thinking but i was a little curious about others feelings on this!