Then you buy a copy machine- ok, so the budget only allows for the second hand blueprint machine that requires ammonia developer. So what the paper alone runs you nearly a dollar a yard. Then you realize the cheap tracing paper you have will not hold up to being handled and copied repeatedly- so you buy vellum to trace your master pattern onto so you can copy it.
OH no! at this point you realize making a pattern isn't enough if most people don't know how to put it together, so you better put together a decent pattern guide. This eats up hours drawing illustrations and trying to explain it where you THINK people might be able to understand it. And while you are at it you better put in your documentation for your pattern, because if you do not- you will be emailing it out or explaining it over the phone to someone every time you sell a pattern.
So when the first customer complains about the pattern price- it does tend to make you a bit grumpy.
You sit down with some of your favorite reading material, take 3 aspirin for the headache the ammonia from the blueprint machine gave you and try to ignore the universe for a spell.
P.S. and this little tale ended up sounding a whole lot like "When you Give a Mouse a Cookie" one of my very favorite children's books. Probably because I can relate!