The hourly rate is the profit. Filament and shipping stay at cost, and the price only rises to cover the platform fee.
Direct sale. No marketplace fee comes out of the price.
Filament starts at $0.03 per gram and is charged at cost. Machine and design time start at $3.50 per hour — that rate is the profit, not a cost with another 50% on top. Change either rate to match your shop. Rates stay in this browser only.