As David said,
it isn't a Mark 7, and you can't really tell what you're getting from the pictures. But at least a 505 with PowerPro, Belt Sander, and Jointer and all looks to be in good condition.
The value of it is hyped up especially since it isn't a Mark 7, but a Power Pro upgraded Mark V 505 as best can be seen. Still cheaper than a Power Pro Headstock.
The ad does list a free shipping option, but I doubt he would honor that. Would likely try to cancel the sale and you would have to get a refund back.