Price Check on some 2600 and SMS rarities

[Kuros]

Atari 2600:

Up 'n Down - R7
Boing! - R7

SMS:

James "Buster" Douglas Knockout Boxing - R7
Y's - R5
Wonder Boy 3 - R5
King's Quest: Quest for the Crown - R6

Games are currently cart only, the guy said he had boxes and stuff for Phantasy Star and King's Quest, might have the stuff for Y's.

[grolt]

Cart only:

James "Buster" Douglas Knockout Boxing - $15
Y's - $5
Wonder Boy 3 - $4
King's Quest: Quest for the Crown - $4

Master System games go down considerably in price without the cases because a.) the cases are so common compared to NES b.) the carts themselves have no artwork.

[Kuros]

Any idea on the 2600 games?

[Vectorman0]

Boing - $50
Up 'n Down - $20