How much Now?

Customer: This shrimp is $9.99 a pound?

Me: Yes, sir.

Customer: One pound.

(I bag up a pound)

Customer: How much was that?

Me: One pound on the dot.

Customer: No. How much money?

Me: $9.99.

Customer: Make it two pounds.

(I add another pound)

Customer: How much was that?

Me: $19.98

Customer: Make it three pounds.

(I do.)

Customer: How much was that?