Since November of 2014, Nintendo has started producing their new "Toys to Life" line of NFC figures called Amiibo. Given the success of Activision's Skylanders, and Disney Infinity, Nintendo has seen an opportunity to enter this market using their iconic characters such as Mario, Peach, and Yoshi. Retailing for $12.99 each, these figures are sold on Amazon.com and other brick and mortar stores.
Image courtesy of marklynx via Reddit
As you can see from the checklist above, there are many figures to collect in various different series, Super Smash Bros. being the largest. However, it has become very difficult to procure some of the more obscure characters such as Villager and Wii Fit Trainer due to their production runs being smaller than more popular characters such as Luigi or Bowser. Because of this the secondary market on these figures has increased sometimes as much as ten times the original price! Consumers are also able to purchase Japanese or European versions of the figures as the only difference is packaging. The figures will work the same as the North America versions.
If you don't mind paying a bit of a premium, and don't require the North American packaging, almost of the characters are easily available. Most of the figures are of high quality, and look beautiful on the gaming shelves. Some of my favorites are Mega Man, Samus, Donkey Kong, King DeDeDe, and Meta Knight. I expect some of the upcoming series to be of the same quality, including the Yoshi's Woolly World Amiibos which are made out of yarn. Given the constant sell through of product, Amiibo should not be slowing down anytime soon. Gotta catch them all!