Customer: This book has a couple of tears to some of the pages. Me: Yes, unfortunately some of the older books haven’t had as much love as they should have done from previous owners. Customer: So, will you lower the price? It says here it’s £20. Me: I’m sorry but we take into account the condition of the books when we price them; if that book was in a better condition, it would be worth a lot more than £20. Customer: Well, you can’t have taken this tear here into account *points to page* or this one here *points to another page* because my son did those two minutes ago. Me: So, the book is now more damaged than it was before, because of your son? Customer: Yes. Exactly. So will you lower the price?