I don't blame you for steering clear of eBay, Rick; those buyers would have #$%&ed me off too!
So far I haven't had any scam buyers
I'm not going to be selling much more on eBay, though.
I ran into the "expired security certificate" problem when I tried to order from a merchant a while back. I got a warning pop-up (from McAfee I think) saying the company's security certificate had expired and asking me whether I really wanted to order from them. I backed out of the order even though I really did want the merchandise.
Fortunately, the company renewed its cert so I snapped up some of my favorite shorts on sale last night