Didn't find Bestmark to be worth the time or money. They have very specific requirements on the shops with zero wiggle room. On a recent shop, I went to Port of Subs and paid $14 on two subs with a $12 reimbursement and $5 in compensation. I had forgotten to ask the name of one of the associates not wearing a nametag, but had his description and he was the only male out of just 3 employees on shift when I was in. The rest of the shop had fully detailed information including this person's description. Because of missing his name, the shop was invalid and I'm out an hour of my time, and $14 on two moderately gross subs. It could be a cool gig to get free things, but the risk is too high on if you make a human error to not be reimbursed for things I would never typically purchase.
Poor compensation, high risk of no reimbursement or compensation