Costs
Calculate Running Costs From Your Own Device Measurements
Record the measurement instrument, device mode and the interval measured. Keep standby and active observations separate.
Compare a Device Purchase With Its Subscription Costs
Choose a common number of months and a currency. Give each option a separate column and record the exact device model and subscription tier.
Compare Local Storage and Cloud Storage Requirements
Start with the files you need to store, who needs access and whether you need access without an internet connection. Distinguish working storage from a separate backup plan.