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A minimum order size. A quarter of 2,000 monthly orders are too small to cover the cost of filling them. The minimum stops most of those and puts off some ordinary customers. On these figures it pays, narrowly.

It costs $2,160 a month and gets back $2,700.
This is a worked example with illustrative figures, not data about any real person or company. Change any of them in the calculator and the answer changes with them.
How this answer was worked out| Step 1 | costs $2,160, gets back $2,700: +$540 |
Every formula is written out on the formulas page.
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