I was going to post something like this but you beat me to it.
Here's mine:
-NFS underground for PS2----$50
-Duratrax Nitro Evader ST + a bottle or so of fuel----$300
-at least 2 Combat Digi-Q (No fun with just one!)----$100 (plus a controller)
-All the upgrades that i don't already have for my Xmods----$
-Bike