I actually did try clicking on one of the "make offer" pages on a fake listing I found on a marketplace. I didn't recall submitting an actual offer amount. Somehow, it did get processed to appear as if I was actually making a $100 offer on what was really my own domain. Fortunately, that marketplace removed this, as well as the fraudulent listing.
At this point, I've decided instead that every time I find a new fake listing, it will not only be reported to the marketplace, but also to Trust Pilot. And, since there are other oversights at the federal and state level for fair trade and good business practices, continued problems appear to merit reporting to those agencies as well.
If a business knows they have a problem fraudulent selling, there either needs to be a prompt correction of it, or appropriate consequences for their lack of action.