That's crazy. Over here in the PAL regions that game is worth like £10 (call it $8) max, but you could probably find it even cheaper for less at charity shops / car boot sales since it's not that uncommon.
Then again, I've noticed the cost and rarity of a lot of games differ massively depending on where you're at. For example, the Futurama game for the original Xbox is like $50, but over here it's equivalent to about £6 usually. Conversely, some crappy SeaWorld game on the GameCube typically sells for close to around £100 here, whereas in the states it's literally like two bucks on eBay!