> The oncoming secondary market is about to be awash in Boomer junk. Nobody wants to send their precious collections to the dump or recycling.

Maybe, maybe not. My mother died a couple years ago, and while she was too old to be a boomer, she still had plenty of accumulated possessions in her estate. We sold as much as we could, kept the few things we wanted and had space for, and the rest went to recycling or the dump. I'd guess 90% went to the dump.

The owner of that stuff may not want to send it to the dump. My mom would be mortified to hear some of the things she treasured held no value for anyone else, but when you're dead, you aren't making those decisions. The next generation probably isn't that sentimental about it.