Project Free Time

This is a work in progress. What is the dollar savings per hour, by using Prime? Is it more or less then income per hour? I.e. what is the opportunity cost.

Action
Cost*
Opportunity**
Time Savings***
Cost Per Minute
Using Amazon Prime Now Verse Shopping at Kroger$10.06$12.079.9$0.20

Notes
* Cost – per day in USD
**
***Time Savings – per day in minutes