In Britain, the prices in the shop is an invitation to treat. Which roughly means, if you like the price - you buy. The shopkeeper has no obligation to sell it to you at the price displayed, but once a price has been agreed, it is binding. It’s the same with tenders; I’ve known people who have under-quoted on, say, a building job and had to complete it, absorbing the loss. Offering some people to waive any charge and then charge others, seem a bit arbitrary. They should cut their losses and put in proper controls on their checkouts.

The 54 Order Man must be a total hermit. How the hell can he have 1200 DVDs, watch them, and have a life, let alone afford that many? It's just too sad.