"Virtual only" Webkinz can be purchased through the official Ganz eStore. Plush Webkinzs, which come with a code for their virtual counterpart, can also be purchased through a number of online retailers.
Webkinz can be purchased with "eStore Points" on the Ganz website. A small handful can be purchased directly without having to convert currency to points. Online retailers who sell the tangible plush versions of Webkinz include Amazon, Rakuten, Newegg, Toywiz.com, Target and Toys R Us. The official Webkinz website also has a "store locator" tool that brings up a list of regional stores that carry Webkinz. Some of these stores may also sell and ship through their websites.