I can understand where he's coming from, spending a lot of time in a store to try things out and then just going out and buying it online is a pretty low move, especially in places like camera stores which are often small operations. On the other hand, this seems to be going a bit far — after all, it's common for people to go and try something out, and then think about it for a few days before making a purchase. Maybe they don't actually want that piece of glass, or they want to look into second hand options, too. Camera gear doesn't lend itself well to impulse buying. Or at least it shouldn't.