I had 500 business cards made and it was going to cost appx. $36.00 extra to have the back side of the card printed. I decided to pay $15.00 for a stamp that I could use to stamp on the date and weekly maintence fee. I looked something like this: Date: __________ Weekly Maintence $______ I figured it would be cost efficient for when I am in the field and someone asks how much I charge I can give them my card and the fee that I would charge. Has anyone tried this? Keep in mind I just started in the business.