Knowing which shops are not worth the time takes a little time to figure out at first. Market force is currently peddling a 39 question, 20+ photo audit shop for $10. I accepted them at first in handfuls, once I printed out the 25 page guidelines I cancelled every single one. Even if these shops were across the street from me they are a no go.
I agree. They have mystery shops for the same stations. You get 2 gallons of gas, make a $5 purchase, look at the inside, take 4 pictures and your done. For the same pay as a full audit. I'll do the mystery shop, but not the audits.
Just so you know, the requirements have changed. You now have to get at least $3 in gas and a purchase in the store of any amount. The reimbursement is still $5 but it's a bit more flexible for areas like California where gas is over $3 a gallon.