Wii Play with Remote - £22.99 from these guys if you pay through Google Checkout. Delivery is free.
I have never even heard of this seller, so you might want to proceed with some caution - having said that, if you are paying through Google, you have some security there I guess.
It is shown as usually dispatched in 14 days - make of that what you will.
Anyway - got to be worth a punt at this price.
They have now added a £1.50 delivery charge, so price is £24.49