I don't think I was asked this question when I did my profile with them, but it was a long time ago.
I've never had one single issue with Merc Systems--no issues with shops themselves, no issues with payment. I found them to be one of the easiest companies to work with. Unfortunately, they basically had just one or two shops in my area--a great restaurant shop that I tried to do as often as possible and a storage company. Both seem to be gone now, and I never see anything from them. I'd love to shop for them again.
@shopperbob, I agree with sandyf. What happened to you decades ago doesn't seem to be the norm with them at all anymore. Companies, as well as people, can change. You might be missing out on some good opportunities. Second chances don't always burn people.
I learn something new every day, but not everyday!
I've learned to never trust spell-check or my phone's auto-fill feature.