| Workshop Rent |
Fixed |
Include $3,000 per month in fixed overhead from Month 1 through Month 60. |
Tying rent to unit volume instead of treating it as the monthly floor. |
| E-commerce Platform Fees |
Fixed |
Include $450 per month as fixed overhead across the operating period. |
Burying the platform fee inside payment processing fees. |
| Software Subscriptions |
Fixed |
Include $200 per month unless the model adds usage-based software charges. |
Treating every software line as a per-order expense. |
| Resin Material |
Variable |
Apply per unit by model: $2.00 for Diorama Base up to $6.00 for Custom Avatar. |
Averaging away custom model complexity and understating premium-unit margin drag. |
| Packaging Supplies |
Variable |
Use the model-level rate: $0.80 to $1.80 per unit shipped. |
Ignoring replacements and damaged packaging in fulfilled orders. |
| Direct Printing Labor |
Variable |
Use $1.50 to $4.00 per unit based on model type and finishing work. |
Counting print time but excluding post-processing and finishing time. |
| Printer Maintenance Allocation |
Semi-variable |
Apply the revenue-based rate by model, from 0.5% to 0.9% of sales. |
Treating heavier printer usage as free once machines are installed. |
| Utilities Workshop |
Semi-variable |
Include $550 per month plus per-unit curing station energy of $0.30 to $0.80. |
Counting energy twice or ignoring the unit-level curing charge. |