I value copies and don't like to think of them as fakes but as "tributes"-
Even ancient beadmakers copied the items which were sought after and they loved- so it teaches us more about the history of tastes and customs, as well as often revealing their levels of technical skill, and whom they hoped to trade with.

it gets a bit ridiculous though when you find necklaces of plastic shells that aren't even rare...!
-says something about our civilisation...