I'm with Bryce on this one. Posting something a week or two after it has ended as an FYI is fine. The buyer should safely have his item and thus eliminate concerns about someone trying to back door and offer more than it "sold" for.
In my opinion, if you aren't interested in an item - let those who are seek it out and have fun trying to buy it. As Bryce mentioned, I doubt Randy is posting items that he is trying to buy before they end
. It's not getting out in the truck and driving the back roads, but it is still fun to find a listing on ebay that you hope may be falling through the cracks so to speak. Not a big deal and everyone sees it differently, but the thrill is in the hunt and this is kind of like going to a pheasant farm for the lazy hunters - LOL.