Still showing as £4.97 on Tesco Direct (and out of stock), but I picked 2 of these up in Tesco Scunthorpe for £1.99 each yesterday. It was the blue/red version suitable for boys or girls. Toys R Us sell the pink one for £5.99.
I had one of these as a kid and loved it!
They're also doing the £5 off a £30 shop if you bring any utility bill in with you to Tesco in Scunthorpe at the moment.