Yeah I don't get the whole "gotta catch 'em all" aspect of the amiibo, but when they are low priced like this I can see them purely for shelf candy. Wario's sculpt is damned impressive... Ryu, not so much, but it seems that the smash bro's amiibo all kind of suck sculpt wise.
I've also got a 10 dollar gamestop gift card burning a hole in my pocket and I think they have rob, duck hunt dog and mr game and watch in a combo for 12 bucks.