- Files submitted
- 120
- Failed conversions
- 20
- Billable files
- 100
In this example, only successful conversions count. Make the unit and retry rules clear before a customer starts.
An original hypothetical scenario by Druumen, illustrating the analysis.
When to use it
When usage can be measured reliably and customers understand how the unit relates to value.
Key elements
Metering unit, unit or tiered prices, usage records, bill transparency, and unit delivery cost.
A question to start with
Can customers estimate a bill before using the service and check it afterwards?
Worked example
A file-conversion service
Charge by successfully converted file. Decide whether failed retries count, then show sample bills for typical usage and check that customers understand them.
An original hypothetical scenario by Druumen, illustrating the analysis.
Your next step
Choose a unit you can explain. Compare customer bills and service costs at small, medium, and large usage levels.