Over the past couple of years, I have bought up collections of 7800 carts to recycle for Al, Bob, CPUWIZ, etc. In the process of doing so, I have some duplicates of a few not so common 7800 carts. Below is the cost of each cart shipped (wrapped in bubble wrap and mailed 1st class in a protective mailer) in the US. If you want a box and Priority Mail, add $3 to these prices. No international shipping for these as they are all NTSC carts.
Alien Brigade-$15
Planet Smashers-$15
Fatal Run-$15
Motorpsycho-$10
Dark Chambers-$10
Desert Falcon-$10
For all of these carts, the labels are intact, but they are not perfect. I have tested these carts on my 7800. PM me, if you want any of these.
r/mark
BTW...I travel almost every week, so shipping will be at the end of the week...when I get home...