| Website hosting and software licenses, $1,500/month |
Fixed |
Include in monthly fixed overhead from Month 1 through Month 60. |
Spreading it per order and hiding the real monthly hurdle. |
| Office rent, $1,800/month |
Fixed |
Keep as a stable monthly charge in the break-even base. |
Reducing rent when sales dip, even though the lease still runs. |
| 7 inch single materials, $4.70/unit |
Variable |
Apply to each 7 inch single produced: disc, jacket, label, sleeve, and bag. |
Using revenue percentages instead of the actual per-unit bill. |
| 12 inch LP materials, $8.00/unit |
Variable |
Apply to each 12 inch LP produced before calculating contribution margin. |
Ignoring the higher material load on larger records. |
| Addon materials: colored $2.80, gatefold $5.60, etched $3.60 per unit |
Variable |
Attach addon costs only to orders that include each option. |
Ignoring addon material cost and overstating upsell margin. |
| Shipping and fulfillment, 6.0% of first-year revenue |
Variable |
Model as revenue-linked fulfillment expense, declining to 4.0% by the mature year. |
Treating postage as fixed and missing the drag from order growth. |
| Utilities: $300/month base plus production utilities at 0.1% of revenue |
Semi-variable |
Split the base utility bill from usage that rises with production revenue. |
Burying production usage and rework inside overhead. |
| Operating wages that step up with capacity |
Semi-fixed |
Increase staffing in steps as volume grows, including the production assistant after the early ramp-up. |
Treating owner salary as free labor or adding headcount too late. |