Marks and Spencer (M&S) has come under fire for selling a “posh” egg and cress sandwich for £6 in its cafes. The sandwich, part of the retailer’s “deep-filled” range, is said to contain just 51g more filling than the £2.65 version offered in the store. Social media users have been left baffled by the price difference, with some calling it “madness.” M&S has defended the price, saying the sandwich contains luxurious ingredients and is a customer favorite.