The cost of printing can be extremely expensive. If you have a flyer or posters that you want to display or send out then you will need to consider how you are going to print them. Some businesses wish to keep the costs down so will print them inhouse but this may end up costing you more in ink and wear and tear on the printer. If you are going to use a printer, then why not shop around for the best price, often prices online will be less that your local printers but it may mean you have to wait longer for delivery and risk the promotional material not being right.
Often if you can print in bulk, you can make a saving. If you are having business cards printed, you may find it cheaper to print sets for more than one person at a time as it may be that you are given a discount for printing more than x number of cards at a time.