Sometimes this bubble works in people's favor. Earthbound is worth over $200 now! It's awesome, man. I'll never sell my copy, but it's pretty cool that one day it will be so rare that I'll get a great payday in the event of financial issues.
EDIT: I actually sold my copy of Suikoden II back in college due to financial troubles. I wish I didn't do it, man. That game is incredible.