Value of carts vs Unocart

[eizner23]

I am interested in the Unocart. To fund it i was thinking of selling my 2600 games. Would this be a wise decision? What is the approximate value of the games below?
Can I get all the ROMS of these games on the Unocart?

 

 

1) DONKEY KONG         15) PACMAN

2) FROGGER                 16) CENTIPEDE

3) GOLF                        17) STAR RAIDERS

4) MISSLE COMMAND    18) GALAXAR

5) COMBAT                   19) TELEGAMES

6) SUPER BREAKOUT     20) WARLORDS

7) TELEGAMES              21) RETURN OF JEDI

BARNSTORMING        22) AIR RAIDERS

9) SPACE INVADERS     23) EMPIRE STRIKES BACK

10)  SWORDQUEST

11) RAIDERS LOST ARK

12) QBERT

13) ENDURO

14) BOXING

 

[Prizrak]

You could fit all the atari 2600 roms available on a 2GB sd and still have tons of room. Value for above carts? Individual or all together? I think a few bucks a piece if sold individually not sure about all, maybe 20-25? I have carts but my Harmony cart gets all the action.