I just did one this weekend. It took me a little over an hour in the store and about 20 minutes at home. Please keep in mind though that this was my first one, and my first time in Whole Foods, so I ended up doing some actual shopping as well.
Most of the items on the list (the list will have 250 items) are brands regular grocery stores carry. So Whole Foods is a little easier because many of those brands just aren't going to be there. It will be obvious too, I'm talking like Bumble Bee tuna, Cheetos, and Chef Boyardee. Things people obsessed with eating healthy wouldnt be caught dead buying in a grocery store.
You email the list back to the scheduler and upload a photo or the flyer or store front as POV in the report. You have almost no narrative or anything in the report itself. Just a description of an employee.
I liked it and have asked to complete another one. I think it's worth the pay.