$50 GC is a pretty good deal. So only $150 for the Wii, if you count the GC to the Wii purchase.
Or you can consider it a free game. Buy Wii, get GC, then on a separate purchase buy NSMBWii or Wii Play to get ur 2nd controller.
hmmm. Not a bad deal to sell on ebay. Should get free $50 for every sale.....