Interactive cost model
A $19 tool rarely costs exactly $19.
Calculate first-year software cash and economic cost, effective monthly cost, cost per client, and a contribution break-even. Change every input—the assumptions are yours, not hidden in a ranking.
USD model · Price anchors checked August 19, 2026 · Taxes and FX excluded
How to read the output
“Client equivalents per month” divides effective monthly economic cost by the contribution you entered for one client. The whole-client figure rounds up. It is a coverage threshold, not a forecast or proof that the software caused any sale. Cash cost excludes the time value; economic cost includes it.
A conservative buying rule
Do not buy a recurring tool merely because one future client could pay for it. Name the bottleneck, estimate the hours or opportunities it already costs, and choose a review date. If the tool does not remove that constraint, export your data and cancel.