Let us say if you look at your calendar 5 times in one day. Which in most cases you probably look even more than that. For the price of these calendars ($1-3 per piece) that one customer will see that calendar over 1300 times in one year not including weekends. That is an impressive return for such a low initial upfront cost. It is easy to make your money(of what you spent on all of your calendars) back from one client and then some.