There was a seller selling some Hitachi V-1065A 100MHz scopes for $105 shipped a week ago in "working" condition...I got one, it is pretty mangled on the left side and a couple buttons and the CH1 knob need cleaned internally but it works fine and the screen is nice and bright. Not a bad price for a unit with on-screen readouts, cursors, and a frequency counter... This model also auto-calibrates at power-on and does a pretty good job of it. Been waiting for a re-list as the seller posted they had 4 more, was thinking about getting more even though the rest are probably just as mangled.
I also got a V-1065 from the same seller for about the same price, same thing as above but without frequency readout, only a little banged up, mostly fine, had to clean two switches but that was easy and it works great (and isn't as beat up as the 1065A was).
But remember, most of these scopes are really starting to age. Both my 1065 and 1065A look really clean inside but switches and who knows when caps, dodes, microcontrollers or other parts will die. For some popular models (465/475), you'll find more dead / "untested" ones than good ones listed. Sometimes you can luck out, othertimes not :/ Good luck I guess...
One issue I have with Dave's video is that he really made it look easier than it is. eBay US is hot and it can be rough to get a deal, the patience and effort needed to score a deal more than doubles every year. It's really chance and luck at this point. Going for non-Tek scopes one stands a better chance though, he is right on that. Another issue is that he really made it seem like things are a better bargain than what they really were. Items he would say "didn't sell" for cheap were damaged items, like the 7100A that he noted didn't sell for $125. That item only has one working tested channel and no probes. Or the 7704a, which was cancelled because of an error in the listing... really, the $50 or less is a real stretch, even waiting and being patient.
I lol'd about "50Hz hum" on the US-listed scope