Vendors are different from car dealers. Anyone can buy a trasharoo, anyone can buy a new SMB from SMB, anyone can buy aluminess products.
At a car dealer with a SMB only one person can buy that SMB. At SMB anyone can buy a new SMB, ergo they are a vendor.
Aluminess is allowed to place ads in the classifieds, and I believe Dave has done so with limited clearance items. What Dave doesn't do (and wouldn't I'm sure) is post "Ladders For Sale", "Front Bumpers for Sale", "Rear Bumpers for Sale".
Among other things Aluminess has their own site for that.
Technically nothing is preventing SMB from listing every used SMB ad and every floor model that's up for sale here in the classifieds. They could, but they don't need to, because they already have their own website. I'm not saying that's why they don't, but if they tried it (which they wouldn't I'm sure) that would be the first point I would raise.
And this isn't about jdbimports, this is about all dealerships across the board. This is about dealer listings, vs. members pointing out dealer listings vs. private listings.
Please try to direct further comments to the proper thread: