I’ve been here almost 5 years, probably had well over 100 transactions here, and I don’t think I’ve ever had a purely PM transaction. I don’t even know how that would work. I suppose I’d have to have a list of people I regularly PM, and just broadcast a “for sale” listing?
I’m serious, I have no idea how this works. This site is only 6 years old, but there are people here who have contacts that go back maybe a couple decades or more, in this hobby. I haven’t been brought into any of those groups, but I haven’t gone out of my way to try to penetrate them either.
I’m not sure if all the PM sellers guard their side groups and cliques that carefully, or if I’m a jerk they’ve avoided or what. Part of it is probably geographical.
E I guess my point is that I have no idea how many transactions actually take place via PM, and I’m not holding my breath that I’ll ever find out. But unless you’re made of money, I can promise you that auctions aren’t a great alternative. And if you are made of money, just wave it around - the chips will find you.