It depends. If it were to have tons of codes on it, it would probably cost more than if you bought it brand new.
19.99 new used is 10.00
it varies depending on how new the game system is (which if its all shiny I am assuming uve either had it for a long time or used an action replay) and how you got them if you used an action replay it is not as valuable as a non-action replay game.
The action replay is a device used for cheating.
An action replay is for cheat codes used for ds games
it's called an Action Replay DS
i dont really have an action replay but my brother does and it hapened with his either ur ds got glitched cuz u used the replay too much or som1 gave u a jank replay
NO ACTION REPLAY IS A KIND OF DISK AND IS MOSTLY USED FOR DS AND GAMESHARK IS MOSTLY USED FOR GBA.IF YOU HAVE A GBA THE BEST THING IS GAMESHARK IF DS ACTION REPLAY.I THINK ACTION REPLAY IS BEST
yes they do because i have used ten on mine and they work.
No, Action Replay is not more efficient or "better" than any other action replay. It merely has been updated to fit the requirements to be used on a dsi.
NO it isn't legit if you cheat to get it.
If by this you mean "What are all of the games that a DSi Action Replay can be used with?" then you can check on the related link below to see if your game is supported by Action Replay. Action Replay is available for thousands of games and it would be impossible to list them all on one webpage.
If you used an action replay card, that would be why. Action Replay Cards give your DS serious glitches.