Tusk Bristleback:
Donella, if you can acquire a crafting buddy, DTU cost is fractionalized based on how many are crafting, which is before DTUs are actually divided.
In other words, if X PCs work on one project, the total cost is 1/X of the listed DTUs.
I do remember reading that ... and have intension to go back and (find and) reread it.
I also remember that for (I think it was) 2gp a day, you could hire an NPC assistant.
I am considering these things, to help get my business up and running faster.