Used Playstation 2 console + 8MB memory card:
http://www.amazon.com/Playstation-2-Console-Black/dp/B0000C7GHG/ref=sr_1_2?s=videogames&ie=UTF8&qid=1355804396&sr=1-2&keywords=playstation+2

Used Guitar Hero SG controller:
http://www.amazon.com/Guitar-Hero-SG-Controller-Playstation-2/dp/B000FIQC72/ref=sr_1_6?s=videogames&ie=UTF8&qid=1355804322&sr=1-6&keywords=playstation+2+guitar

PS2 console+memory card+guitar for $40, ask to buy separately