Total Initial Investment
Calculated as (Number of Machines × Price Per Machine) + (Number of Machines × Initial Stock Per Machine)
Monthly Gross Profit
(Daily Revenue × 30 days × Number of Machines) × (Gross Margin / 100)
Total Monthly Operating Costs
Sum of site rent, POS rental, other machine costs (× number of machines) + staff salary + warehouse rent
Break-Even Point
Total Initial Investment ÷ Monthly Net Profit (in months)
Annual ROI
(Annual Net Profit ÷ Total Initial Investment) × 100 (percentage)
