Not gonna pay this on Twitter yet, so any fellow CoSoNauts in the UK have ahead start...
My local Co-op store seems to be getting rid of old beer stock. I just bought 10 660ml bottles of Doom Bar Beer and Thatchers Cider, plus a couple of cans of Brewdog for under £8.
Like, under 50p a bottle.
Don't know for sure, but I suspect those lines are being replaced and the same thing may be happening at other stores, depending on how much stock they hold.