Bob and his dad visited the hardware store on Saturday. They observed the following transactions:Mr Harris bought 4 for $0.50, Mrs Clarke bought 21 for $1.00, Mr Montaro bought 1,124 for $2.00 and Ms Park bought 450 for $1.50. What were they buying?

Answer 1

Street numbers, at $0.50 each digit.

Answer 2

more stuffs