https://www.techspot.com/news/102684-zilog-discontinuing-z80-microprocessor-after-almost-50-years.html
While nothing Apple made uses the Z80 specifically, the Z85C3008VEG PLCC44 and Z85C3008PEG PDIP-40 (aka the 85C30 SCC) used in a lot of 68K Macs, is also being discontinued.
If you're...
Oooh - very nice! I'm going to have to get myself a few of these - i've got plenty of USB-C chargers, both Apple and otherwise but magsafe stuff is few and far between.
For most consumer stuff - I agree, that scope is overkill. And a weighty beast. If you're getting it for $50, sure, go for it, but if it's in the $200 range, get yourself a much more modern Rigol scope which ditches the CRT, as @JDW suggests.
Its fine to post a thread to an ebay auction in general, it's why there are threads like these in the trading post:
https://tinkerdifferent.com/threads/eu-roi-internet-auction-finds.760/
However, if it's your own thing - just make a thread in the relevant section of the trading post following...
Sounds like you need to redo the soft power/startup circuit, usually a recap, but check all the traces around and under the 74LS chips. Also the logic there can just die, so worth replacing them while you're at it.
It would be very popular... If people would commute to it. Not enough critical mass for it to succeed as a storefront -
Also, business rates, commercial rental prices are through the roof - it'd open and fold within a month.
Ha! There was due to be an Aliens/Star Trek crossover graphic novel released, but it got cancelled for some reason - was supposed to be set on the Enterprise-D at some point before it went boom over Veridian III - i'd have loved to have read that!
There have been so many franchise crossovers...
I'd love to go dumpster diving....but unfortunately, most skips here are just full of utter crap. Never anything good. If you go to the recycling place to drop off your e-waste, they don't let you take anything away, even if another person offers it to you, they get actually angry and tell you...