There’s many models spanning decades. The price depends on several factors, including the age of the buyer.I showed my old Simpson meter to an AC guy and he said it was worth a lot, but when I looked it wasn't going for much.
One of the nice things about a Simpson is you can use it as a voltmeter with no batteries in it. Makes for a nice trunk-stored meter.
The other thing is you can see glitches.
But scopemeters have really come down in price. Also, several DMMs have a fast sampling bar graph, which simulates glitch detection.