HJS - The Collector has one thought : GOT TO HAVE IT !

IMHO - What you see on eBay with the Drake R8B
are "Market Forces" setting the Price for a Limited
Quantity of an Highly Valued Item 'For Sale" at Auction.
Plus - Perceived High Quality of the Item.
Plus - Excellent Performance of the Item.
Plus - Very Few Items / Discontinued / Not Being Made Anymore.
Plus - Small Number of 'Very Interested' Buyers.
eBay Auction = World Wide "Open {Competitive} Market".

basic economics 101- yes it is that simple ~ RHF