I've wondered about people sometimes too. Weird offers I've had on this site and another:

BSD, 100% working, rough cabinet - got offered $200 twice and $800. Sold for $1,700
T2 - someone emailed me saying they would come pick it up for free. Sold for $1,650
Monopoly - guy talked to me on the phone for an hour and offered $800. Sold for $1,900

A lot of people just want something they can play and then flip for 2x their money. I guess this is America and I can't get mad at someone wanting more $$$$ but for goodness sake... check the little number next to people's names and click on their collections. If someone has moved 30 games they know that the Boards in BSD are worth more than $200 and T2 isn't a $0 game.

If you want a NICE TZ, then buy a nice TZ. It's not like they aren't out there. Not everyone wants a pristine game at a pristine price.