WTB: Wii Sports - Game only

I bought a modded Wii - but the person I bought it from sold the Wii Sports game that came with it - I am looking to trade or purchase it for the kids for a reasonable price........if I have to pay $50 for it, then forget it and I will just burn it! But I would rather buy it off a member or trade for it, so I have the original for the kiddos to enjoy - Plus I seem to enjoy it as well, not a bad game that comes free with the system too bad mine didn't