You can purchase Avatar Action Figures online from stores such as Toys 'R Us and Toywiz. You can also find Avatar action figures for sale from retailers such as Amazon.
you can buy the action figures at specific gaming and collectible shops such as Gamestop and Wallmart.
You could probably buy them online.
you can buy it on eBay or amazon
Walmart
Google Young Justice Action Figures and you'll find a plethora of places to purchase them.
Wal mart
Order it by phone!
www.homies.tv or sometimes in walmart
At. Toyrus
you buy the wwe steel cage for big figures
I Buy them at amazon.com they're pretty cheap just search teen titans action figures and the name of the character you wish to buy
e-bay,toy globe