If it's less than $20 I use the workbook, more than $20 I make copies.
Anymore, I almost always use the workbooks- copies are expensive! I have a inkjet all in one that I can use, but the ink drives me nuts- it dries out before it runs out and costs a fortune to replace. I also have a cheap black and white laser, but it's a pain to scan with one thing, save, send to the printer for every page. And as far as going somewhere to make copies, no thanks. I'll just buy another cheap workbook!