ive seen them go anywhere from 1000 - 3000 depending on condition. personally i wouldnt sell it for less than 1k. its a rare game with a growing fan base and hard to come by working with the original parts.
do youself a favor a post other places that KLOV as your likely to have people keep telling you its a 500 game. LOL. There are the LD collectors on DLP and might try the clint eastwood fan sites on the web as well. good luck. let me know if you ever find Discs 1 & 3...
They don't even mention monitors in this flyer for the company.
Although, in reality the monitors Amplifone made could of been just been on contract specifically for Atari unlike other monitor manufacturers. I don't know the exact history of that partnership.