Lots of vintage stuff pricing is quite high these days. I also collect 8 bit computer junk and for example a digital doorstop like a Commodore 16 is priced in the 400-500$ US range these days.
On the Tektronix side I've noticed far fewer letter series plugins these days. Sampling and spectrum analyzers are rarely seen now IME.
I guess all the ones worth snapping up have been snapped up, certainly by one person (who could it be) who has a closet full of them and never uses them...
