wii sports game is included in the basic package but as mobad said he wanted to exercise i think he may have meant the wii fit. wii fit is about £70 and wii is normally £180 or thereabouts so anything less than £250 and you are looking at a good deal. but as the wii fit is in short demand at the moment (due to the usual nintendo incompetence or strategy to keep you waiting) expect to pay more!!
just recently got the wii console,wii sports, wii fit/balance board, 2 controllers,2 nunchuk and a 1gb sd card for just under £300. if you are looking to get the wii fit it may be besst to get it within a package deal as they are like rocking horse shit at the mo