I've noticed lately that some very interesting options are coming out for big gamers. Some people will buy one game per month, or more. That cuts you down by $60+ each month.
I don't know if such services are available in the US or elsewhere in the World, but in Canada, we have services such as Games Mania (http://www.gamesmania.com), where you can rent PC games online. You can rent them one game at a time, for 3 days, for about 6$, or better, buy an unlimited 15$/month subscription. Any game, as long as you want.  Granted, they don't have every single game out there, but they do have a nice selection anyway.  Unfortunately, that service is for Canadian residents only, but do such services exist in the US or elsewhere too?

As for console gaming, I also noticed that my video renting store also has a similar fare. For 30$/month, you can rent any game for as long as you want. Seriously, what a bargain for the serious gamers!

(Note that the above prices are in Canadian currency. For the US equivalent, cut the price by about 35%.)
[Message Edited]