...if you bought them all at their launch prices?

Referring to this thread: http://www.digitpress.com/forum/viewtopic.php?t=18101

Mine would come to around $5,110:

32X $160
3DO $700
Atari 2600 $250
CD32 $400
Dreamcast $200
Game Boy Color $80
GameCube $200
Genesis $190
Jaguar $250
N64 $200
Nintendo DS - $150
Nintendo NES $200
PS2 $300
PSP - $250
Saturn $400
Sega CD $300
Sega Master System $200
SNES $200
Virtual Boy $180
Xbox $300

Plus whatever the Odyssey2 cost (since no one appears to know that).