I buy almost one or two brand new game Wii or DS game each month, I buy also on Steam, but almost always qpecial offer cause I don't want digital distribution to be my exclusive game provider.
I also plan to buy a ps3 in the near future, and I'll buy games from the secondhanded market.
So yeah, expect a monthly budget of 100 pounds/euro per months. Quite cheap for a hobby that takes me 4 or 5 hours a day, (and I do not play on hacked games). We should consider the monthly ratio price/hour for any hobbies, whether it is whaever sports, books, playing cards, DVD/Blurays...







