(part one of who knows how many)
Turns out I left out armor pricing from the Boilerplate playbooks! I'll update them, but until then, here's the information:
Shield (+1 AC) 10 gp
Helmet (+1 AC) 10 gp
Leather Armor (+2 AC) 15 gp
Mail Armor (+4 AC) 30 gp
Plate Armor (+6 AC) 50 gp
EDIT: Okay, armor has been added to all the playbooks, and a few other errors have been fixed up. Please let me know if you spot any others!