Why are old camcorders so expensive?

I've noticed that vintage camcorders are fetching surprisingly high prices in the market. Could you elaborate on the reasons behind this? Are these camcorders sought-after for their rare technological features, or is there a nostalgic value attached to them? Are collectors driving up the prices, or is there a specific demographic that finds these older models more appealing? I'm curious to understand the economics and psychology behind the increasing demand for these seemingly outdated devices.