I have always been happy to help support the site by being a site supporter. (Actually happier when it was half the price it is now.) I have always encouraged others to so also.
That said, the same money we voluntarily contribute to help maintain the site we actively participate in ain't no money to a pro-trader/flipper. It's a no brainer purchase of a closed customer base that can be paid back in the first sale.
While our site likes the money from the classifieds only posters, I contend that it actually takes away from those of us active poster site supporters who use the classifieds. On top of those who have given up using the classy's over the quality concerns discussed in this thread and others.
The idea that our classifieds are a "perk for active members" is waning. I adamantly oppose allowing our membership's classifieds to be bought into for such a minimal investment. If someone wants to bring their business to our classifieds without having to bother being a part of the community fine. Insist that they pay INGO advertiser pricing.
In what you have said I am a firm believer.
I can not force the Advert. banner on a member just because I suspect (am absolutely sure) they are running a non-FFL under the radar.
When I put the question to these members and I have, I get the expected results. Well no I am not running a business. I just like to try new things.
With no real evidence I can only press them into being a site supporter. And I have on multiple occasions. Beyond this there is not a lot I can do.