My Wal-Mart has them at the end of the toy section and in the "impulse buy" section at the register.
Zeller's used to keep them in front of electronics but now has them in toys as well.

Same as mine, wal-mart is in the end of an toys isle, with the NHL figures next to them. Then in the till lanes to try and get impulse buys (almost worked a couple times). Zellers is in front of electronics which is right beside toys