It might be awhile. Buying games on Steam is like Pokemon for grown ups. :lol
Just throwing out the fallacy that you have to be rich to invest in pc gaming. Hardware isn't nearly as expensive as it used to be, and software prices are a lot lower.
I'm currently playing Torchlight and Defense Grid. Both great games and I would recommend them both when they come to 360 (only defense grid is confirmed right now!).
I also picked up Outrun 2006 Coast 2 Coast for $2.49 on steam, auto detects my 360 controller and plays great. Such a fun arcade title!
I will get you to join the pc revolution smokey!
Lots of cool stuff to dig into! PC gaming is ripe with mid tier 10 to 20 dollar games that are fun to play.