Just enter your hourly wage and then prices on a website (e.g. "$45") will be converted to the hours you need to work for that equivalent amount (e.g. "3 hours" at $15/hour). This extension is a work in progress! It works in most cases except when a site splits a price across multiple HTML elements. Currently only currencies that begin with a "$" symbol are supported. Reach out to me on Twitter (@pfarnach) if you want support added for different formats, or if you've found a bug.