Just bough a couple of 500g packets last night at the local (Egham) store for 57p each. Not sure if nationwide or not, seen some cheap ones for 60p here.
On Tesco's website they are "Half Price Was £2.29 Now £1.14".
But for some reason just 57p - in store NOW!
The only problem I've eaten loads.
I tried to add a photo of my till receipt - but failed.