Slightly melted Chocolate

It's a summer holiday weekend and a man walks into a Chocolate Shop which has a sign in the window saying
"Slightly melted Chocolate : 29 cents per pound"

The man says, "I'm having a Party this weekend. I'd like 5 pounds of your Slightly melted Chocolate , please.".

The shopkeeper shakes his head and says, "Sorry. We're all out."

The man, disappointed goes down the street to The Kanjibhai Chocolate Shop and asks, "How much is your slightly melted chocolate ?"

Kanjibhai says, "It's $3.29 per pound."

"Three twenty nine!?!" exclaimed the customer. "Just up the street he sells it for 29 cents!"

Kanjibhai smiles calmly at the gentleman and asks, "Does he have any?"

"No. He's out of it right now."

"Well," says Kanjibhai . "When I don't have any, I can sell it for 19 cents per pound!"