Two for the Price of One
The sign in the window of the hardware shop on Bridge Street said: BUY ONE, GET ONE FREE. £9.
Tamsin picked up two tins of paint. “These are four pounds each,” she said. “Two of them is eight. Your deal is nine.”
“Correct,” Jonty said. He’d painted the sign himself.
“So it’s the worst deal on Bridge Street.”
“Worse than what? You’re not buying two tins. You’re buying one tin at the offer price, and the second one’s free.”
“Nine pounds for one tin of paint.”
“Nine pounds for the best product in the shop, and a free tin with it.”
Tamsin put one tin back on the shelf. “And if I only take this one?”
“Four pounds.”
“So the free tin costs me five pounds.”
Jonty looked at his sign for a while, and then he looked pleased. “That’s why next week we’re doing double free,” he said. “Two free tins.”
“How much?”
“Fourteen pounds.”