Kelloggs Nature's Pleasure crunchy muesli is on rollback to 88p per 460g box I noticed today. Usual price is £1.78 per box. Three varieties to choose from - Raspberry and Cherry, Apple and Blackcurrant or Almond Pecan & Cashews.
"A blend of natures finest ingredients like whole grains and soft fruit gently baked to create a deliciously different baked muesli."
I think I read somewhere that Kelloggs are changing the packaging on this so that could explain the reduction. It was a standard rollback shelf label, so I'm guessing this will be nationwide and not store specific.