I know they have lovely food, and you have to pay more for better-quality meat, etc., but surely there is no excuse for this:
Lindemans Framboise 375ml (raspberry beer)
Asda price: £1.64
Waitrose price: £2.19
Chimay bleu (trappist beer)
Asda price: £1.74
Waitrose price: £2.39
These are just bottles on a shelf.
Similarly canned food:
Heinz Spaghetti bolognese 400g
Asda 70p
Waitrose 98p
Toilet paper:
Andrex toilet quilts 9
Asda £4.76
Waitrose £5.35
and I could go on.