To the lady who selected a book (having cast lots of others around rummaging car boot style) and when told that it was usually £20, so currently £10 in our half price sale, asked for trade discount, as she is a dealer.
"But madam, trade discount is usually 20%, and we are currently offering 50% off"
Yes, so I expect 20% off the half price".
I politely declined, and asked her what sort of books she deals in.
"Oh I don't touch books, I am a antique jewellery dealer".