Wow, you can mix and cut 40-some cookies in under an hour? I definitely can't. You'd probably want to pay yourself more than under-minimum wage as well.
Since you've seen those links, I won't copy them here. But, if I were you, I would build in more value for my time, and start to price up over time. If you lose a couple of customers over it, it won't be hard to find others who place more value on your time.