Where do you buy packs of Welcome Amiibo?

[Geowlett]

I cant figure out anywhere that the welcome amiibo packs are sold, only the regular ones. My mom wants to get me some for my birthday but neither of us know where to look. Any one know?

 

[2kimi2furious]

Amazon.

 

[Tobyjgv]

Amazon, as kimi said.
The prices can vary though, like series one and two are just under 7 dollars, where as four is almost 10 right now.