My Mom The Old Hag(gler)

I go to a used bookstore sometimes to buy and sell books. One day, my mother, who isn’t the best customer, comes along with me to sell books. The owner goes through my books, and he sorts them into two piles, one which is significantly smaller than the other one. 

Owner: “I’ll buy these for five dollars.”

He gestures to the smaller pile. 

Me: “Okay.”

Mother: “Now, wait a minute. Why won’t you buy the rest?”

Owner: “There’s no room for them, they’re not worth much, and I have full shelves.”

Mother: “But she’s giving them to you for a decent price!”

Me: “Mom, it’s okay. We’ve been through this before.”

Mother: “No, it’s not okay. These books are worth more than five dollars! He should at least give you twenty!”

Me: “Mom, stop. These books are more than ten years old. He’s right; they’re really not worth much.”

Mother: “I still think he should give you twenty.”

Me: “Sorry about that, [Owner]. I’ll take a five.”