I think people have a real issue disassociating the price of the ingredients and the price of the crafted goods. Sometimes items are sold for LESS than their component parts (just look at any NQ 2-star equip), and sometimes they're considerably more expensive. Knights Bread is relatively cheap to craft yet because of the amount of ingredients required and the craft level, people will still happily buy it. The higher level you go, the more true that becomes.