paper stuff is unique and niche. you have some unique items there though and i can't tell if some of the game (boxes/sleeves/etc) have disks or not. I see some disks in a folder, but say for instance rear guard by adventure international is a pretty rare game
http://www.ebay.com/sch/Video-Gam...
not worth the 200 people are asking (probably closer to 80-100), but just by the pics you can't tell.
check out atarimania.com as well as they have more info on stuff.
If i was buying the lot to resell i'd offer you $150-200, maybe more if stuff works. Atari computer shit can sit and sit and sit and sit for days, months, years on ebay.