I know I should have brought a bag and I usually do. If the option was a plastic bag I would have struggled with the shopping in my arms to the car, but I thought as it was paper it wasn't so bad. What I didn't expect was to be charged 50p. M&S say the bag can be used 100 times. Is there anyone out there who has reused an M&S paper bag? AIBU in thinking most people don't realise they cost 50p, that the assistants should make this clear and that M&S are profiting from this government policy?