OP-
brings up excellent points for our consideration. The net has changed, better or worse, it has changed. In the way of forums, there are many, many more in 2016, than say, 2004. eBay in 2016, is laden with rank amateur sellers who are not professional at all. Paypal was the worst thing to happen to the 'bay. Those guys get what they deserve.
Thankfully, Amazon has steered clear of this crap and remains the best choice for net commerce- I am a weekly customer.