In the Piccadilly Circus branch of Zavvi the advertised deal was console and any game for £190. However when I bought a Wii with Super Mario Galaxy it only came to £180. The assistant also asked if I wanted the £180 or £250 bundle so whether it is mis-priced or mis-advertised I don't know.
This works out at a better price than the Woolworths deal as you will want to buy a game with it. They said they were out of stock for Mario Kart until Wednesday.
Sorry I don't know whether this is just the one store or nationwide.