From MTV Direct (Verified by Harmonix Staff at Rockband.com)
For $99 you can get the Rock Band 1 Bundle (Wired Drums, Guitar (Wired for 360, Wireless for PS3) and Mic, with disc), Rock Band 2 Disc, and the AC/DC Live Track Pack. That's 183 disc songs, and 20 (well, 24) free downloadable songs, of which all but 3 can be exported to Rock Band 2.
It's only for the 360 and PS3, and there's $15 shipping, but it's a pretty good deal if you're looking to get into the game.
