Amiibo would fine if Nintendo just kept up with stock and demand. A nice bit of optional content you get in a cute figure of your favorite character, if it weren't for the complete incompetence at actually providing the product to consumers it'd be a great system.
As it stands right now though, the only people getting Amiibo are hardcore collectors who put it in the time and money to be the very first in line to get them.
I remember when Amiibo got announced, I thought it sounded great, basically like Pokemon but for everything that's not Pokemon (until they make a N3DS or Wii U Pokemon game anyway), and now it's just scrambling around, trying your absolute damndest to find ANY good Amiibo at any possible stores you can find. Unless they turn it right around in the other direction, it's a failed concept.