Some observations on the "young". Can be taken as criticism if you like because that's probably what some of it is.
I attend a WWII weekend once a year and go to the occasional military exhibition in between. I see kids, and I mean kids, running around in full, either real or excellent reproductions of WWII gear carrying replica $200+ resin rifles and frankly acting like complete idiots. It addition to this ever increasingly large group are the twenty-somethings that have the same with the exception that their firearms are the real deal. In general, this group is slightly more historically accurate and slightly less idiotic than the first although for the life of me, I can't quite wrap my head around with why anyone would want to dress up in SS uniforms and then proceed to tell people that THIS SS unit didn't perform any attrocities during the war. Yes, I've heard that. So not only one individual is doing this but an entire group of them forming a complete squad.
So money seriously doesn't seem to be much of an object with these people, they are buying things up so fast that new comers are left buying czech or yugo rifles. Interest is there because again, no shortage of people getting into it. It's knowledge that seems to be at a complete loss.
On a semi-related note, the last great milsurp, the Mosin Nagant, sold by the thousands at Cabelas to people that just wanted a cheap rifle to cut up and make go bang.
In defence of the re-enactors, once they get in their 30's they really seem to settle down, get serious, know what they are talking about and take care of their stuff. There are also exceptions to the younger ones. I take a young girl, 15 now, to this show each year and I just have to look at her and roll my eyes when these characters start acting up. "Look at my plastic rifle, isn't it cool"