If you’re old enough to remember stacking quarters on the machine or searching magazines for move lists, then you might want to pick up the heavily-discounted 25th Anniversary Collection set for the SF franchise from Capcom’s online store. For $100, you get 11 OSTs, with two discs of fan-crafted material, disc copies of Super Street Fighter IV Arcade Edition and SF x Tekken, a Blu-Ray set with a series-spanning documentary, the God-awful USA animated series and the far superior first animated movie along with a figure of Ryu, a certificate of authenticity, and an artbook.
PS3 owners also get a code for a PSN bundle of SF III: 3rd Strike Online, the entire Street Fighter Alpha series, and Super SF II Turbo HD Remix.
Buying off the Capcom store also entitles you to a free 8-bit SF lanyard. It’s worth noting that the cheapest shipping option is $17, so your total would basically be $120 down from $170 since the set retails for $150 on its own.