I purchased these from a friend who needed $$ a long time ago - I have no idea what they are worth and cant find much online about them. The majority of these the batteries have died. The Ms Pac Man Pen game does work and is actually kinda neat. I have instructions for a few of them but no boxes
Sold as is.
$25 plus shipping for the lot.
Texas Instruments 99/4A computer in box. Box has wear (see pics), includes power supply, 2 joysticks, coaxial cable connector for switchbox(see in pic) and 7 cartridges - Parsec, Munch Man, Adventure, Jawbreaker II, Moon Mine, TI Invaders, Tunnels of Doom.
$50 plus shipping