Ok. What exactly is your problem though? Why wouldn't you just buy a printer?

On second thoughts, this service might actually be useful if the printouts are to be sent to someone else so that you don't have to deal with the handling and postage. For example, web or print designers might find it useful to send hard copies of their initial designs to prospective clients as a way of giving a quote. Small high street businesses and shopkeepers who don't have an online presence would probably find it more convincing to see something in the flesh rather than on a computer. In fact, designers could probably do this without even being asked for a quote. Find the postal address of potential customers and snail mail them some designs with a quote and your contact details.

Does that make any sense?

Invoicing - you create an invoice and you want printed version to be delivered to your customer.