Mass Effect 1, 2, and 3 are soon available in one bundle for both the Xbox 360 and the PC. On November 6th, the Mass Effect Trilogy will be ready for your sweaty hands for only $59.99.
To put it into perspective, each game originally cost $59.99 - just sayin'.
As for the Playstation 3, well, plans are absolutely there to release the trilogy, just not at a date that anyone can know about. This will of course mark the first time the original Mass Effect is available on the Playstation 3.