Unfiltered Story #172060

I work in an art supply store, two of our common products are large sheets of paper and portfolios to carry them in. We have cardboard portfolios that are pretty cheap, ad we have much nicer ones that range from 20 – 70 dollars.
Today while standing by the registers, I witnessed this interaction.

Boy comes up to cashier with paper and portfolio that is around 50 dollars.

Customer: Do I have to buy this?(gestures towards portfolio)

Cashier: Yes?

Customer: Oh… well… what else can I get that is free to carry my paper in?

Cashier: Well I can give you a plastic bag.

My question is what else did he think was free?