The issue is, if you want them all or even just the ones you like, you HAVE to take them seriously or you don't get them. I'd have loved a Ness amiibo, but that looks like it'll never happen, which sucks. If I don't pre-order and go Amiibo hunting, I'll NEVER get to have it, so it comes down to all or nothing. And I'd rather not have nothing if I can help it.
That being said, I have about 15 of them now and never paid above retail price for any, besides Meta Knight who I payed to get shipped.