J.B.
We're a Nintendo family. Nintendo has a good selection of age appropriate games. The WII although pricey has some great games where kids can actually get up and move around.
Game Stop sells new and used games and my kids have learned to be smart shoppers when it comes to spending their allowance. They buy used games and sell the games that they are dont play.
I'ld start looking for the game system you what now. The closer we get to Christmas the harder it will be to find the system and accesaries that you want. Become friends with the kids that work in the electronics department at Toys-R-Us and Target to find out when they get their shipments.