A lot of this depends on your experience, the locations size and cleanliness, the distance between stations, the cell signal. I have YEARS of experience and generally find I average about 30 minutes per station for an 8 pump, doing everything directly on the app and submitting. I have a lot of BP stations around me and can usually fit them in to where I am going that day.
I have 5 planned for a 4 hour route going to work tomorrow. So, that's $125 in what is really 3.5 hours, as I would be driving to work anyway and would plan 30 minutes. That's $35/hr for me. I'll take those numbers.
If it's your first time, plan an hour though. Take a lot of extra pictures, even if you used the app, just in case. That math isn't as good, 5 shops would be 6 hours, so about $20/hr, but that still beats most jobs