I could go back and reread my IC contract and information. However, what I can say from experience is that I have received a check from MARITZ (yes, an actual paper check) for my bank assignments within 3 weeks of completion. The only exception was for a couple of shops whose photos were deemed unreadable due to the scan program I was using. It was pretty frustrating having to go back about 4 times and rescan all the docs on my husband's computer, using HIS scan program, or take photos of them and upload THOSE into my files and send them. One particularly big problem was that one of the documents I received was a very poor quality original to begin with, which I told them several times. I even offered to MAIL (as in USPS snail mail) the originals to them. They declined this, and we eventually were able to resolve the problem. And I am still doing assignments for them, getting paid as usual. I have not done any gas stations, simply because I HATE doing audits and the couple I have done could not have paid me enough to do them again, even if they TRIPLED the pay rate.
However, as far as pay schedules, I have been paid quite regularly, and if you rad the instructions for EACH job very carefully, there should be no problem in completing the report accurately.