Not sure if there are any game collector's here, but from what I've seen on Ebay as of late, there are a lot of crazy prices for old school games on sale. The most extravagant so far is NES's 'The Flinstones: Surprise at Dinosaur Peak' being sold brand new and sealed for $250,000!
So even if you somewhat of a game collector, what is the most you've ever payed for a game?
For me I would say paying $61.11 for a like-new copy of .hack:Vol 4 Quarantine off of amazon. I had to swap the cases as the plastic case was busted but the cover art and manual were perfect, and the discs didn't have a single faint scratch or scuff on em at all (I feel for this price getting these discs in this condition was a pretty good deal).