It’s common for mis-stamped coins to be worth a lot of money. For example, a 1983 Double Die penny sold for just over $7000. The same holds true for Sacrament Programs. So if you notice an error, make sure to save it since it will certainly be worth something. It might even be worth checking any old programs you have lying around. For example, if you still have last week’s program, I found an error and have already sold my copy for just under 1,000 milli-cents!