Hmm... I had to think on this for a bit. The Atari 2600 was a pass-me-down, the NES was a gift, as was my Game Boy. So I guess that makes the SNES the first one I bought myself. It was on sale for $129 from Kay-Bee toys. (Okay, why do I remember that much?)
-dunno001
-On a quest for the truly perfect game; I don't think it exists...