atari 8 bit protos and unreleased games

[atari70s]

Do they hold people's interest, i see very little auctions and sales of 8 bit games ( on carts ) that makes me wonder do many people have protos and unreleased games( like i got one). do they hold values. if so what are some of the values. i know mine is a 9 out of 10 so maybe its a 50$ game. i know atari 2600 protos bring more. but is this type of system ( being an 8 bit computer carts) an undiscovered collectible for as protos and copies of inreleased games? please shed light on this topic. i know buy atari and tempest might have some info on this