Bass making at Rickenbacker, Sandberg, Custom shop etc levels is skilled Labour.
How much would you pay for a plumber for a week for example?
If it’s a weeks work, subtract that cost, then subtract materials, then built in wear and tear to tools, consumables, electricity bills, property rent/mortgage - then a wage for admin non luthier staff - then we should allow profit.
Its not that bad in a lot of ways....