as well as the time and the expertise issue, I always think of print mark up as:
- a way of covering any cock-ups that you are liable for as print costs can hurt.
- cash flow, will you get paid from customer before you have to pay the printer?
- best of all, if the client rings you up and wants a straight reprint of last version, call the printer, make the order and wait for the easiest money you can earn come in.
the 1st point is why I cant sleep easily, the 3rd is when I sleep like a baby.