Gamecube Laser Repair

My gamecube seems to be busted...I was playing TimeSplitters: Future Perfect and during the game, the screen froze and the console stopped responding, so I shut it off, and after I let it rest for half an hour, I tried turning it back on, but there is no sound or visuals coming out of my TV. The disc is spinning fine, i think it might be the laser. The game is an authentic copy...not a backup, console has NOT been modified, except with the "GCOS" soft-mod. If the laser needs repair, how much will it be? Or would it be more worth it to sell my gamecube and just buy a wii? Any help would be appreciated