A man goes to a hardware store to buy something for his house

The clerk tells the man that 1 would cost 25 cents

12 would cost 50 cents and

122 would cost 75 cents

What did the man buy?

Numbers.

damn that was quick

LOL

you must have heard it before

Nope - just thought about it a little. At first I couldn't figure out why the last number would be 122, and then it all clicked.