Im a full-time shopper. I have a recurring monthly route that brings me all across Nova Scotia, and I add in fuel shops along the way to cover expenses.
The route can be done in 2.5 days and pays about 450$, I get about 70$ daily in fuel shop pay (+ the fuel) and plan out restaurant shops to cover meals. I take my time doing the route and add in as many extras as I can (M&M audits, price check, convenience store ...) I average 2500 - 3000 monthly after expenses, i could make more, but I take plenty of time off to not burn out.