And to address the comments that the hobby has become a rich man's game, to some extent that is true. But, a normal schmuck like me has purchased a few items worth several thousand USD the past year or so during these crazy times; grails that I never thought I would get. Am I rich? Not even close. I live a middle class existence and have three young kids and wife that is home with the kids. And those ****ers suck my cash at an alarming rate!!!!!!
So how did I do it?
I am always willing to sell things from my collection that are common or I can replace down the line when something rare (and unfortunately expensive) comes up. So the people paying thousands of quid for a Meccano Fett or a RFF may not be rich at all. They may just be willing to sacrifice some or a large part of their collection to get their grails. For some this is hard to do as they hate to part with anything in their collection, and I get that. But for me, I see my collection as a fluid creature that constantly moves and changes as my tastes change or opportunities to get items I never thought I would arise. It keeps it interesting IMO.