Found these instore at Tesco Extra Prescot (Merseyside) today. Currently £54.97 online at Tesco Direct.
Plus, if you have the weekly Clubcard vouchers (currently on Week 2), there is another £2 off making it £33.89
Curiously the 250Gb version of this was on the same shelf at £69.99, and the 500Gb at £119.97!
Had about 5 in stock (minus the one I bought!) at lunchtime today.