i think they still supply bags, i know in M&S they'll give you free bags for clothing but charge you for the food bags....
i went into sports direct for some sports bras, she asked me if i wanted a bag, i said no but can you give me the receipt..... but no apparently that's not enough to prove i've paid for them so she then gets on the tannoy "lady exiting shop with sports bras has just paid for them"
at least she called me a lady....