Conaill said:
Actually, you would just pay extra for the material costs of the golden sphere. Yes, crafting a plain sphere should take less time than crafting an intricate high-quality lock.
The Craft rules are designed such that the price of an object is proportional to the DC to craft and the time it takes to craft it. From that principle, they "reverse engineered" a formula to determine how much progress you make per week.
AuraSeer said:When I'm calculating the price for Crafting, I take the final market price, and subtract the cost for raw materials. (Usually that's half the cost, except for precious metals or other special materials.) This seems to work pretty well.
When you're making an iron lock, most of the cost comes from the required workmanship, and that's why it takes a long time to construct. A simple gold sphere is very simple to construct, so its market price is barely higher than the price of just the raw gold.
Umbran said:The difference is magic.In a normal fantasy world, magic works a lot faster than chemistry. Plus, while you may have taken some chemistry, you've got a couple bad assumptions.