20% Renegade shop and dillegence

I'd estimate 40m in materials (at a minimum) and a bigger amount in fatigue potions, but you can earn a lot back if you're doing accessory crafting, I got some 5-10m earrings pretty often, and a set or two worth 100m+. You pay more upfront for the ores to make half earrings but it pays off.

If you just want easy levels, forging arrows is quicker cause you can hold more at a time.