I tend to agree in some respects, every man and his dog thinks they can do astro photography these days so the market is often saturated with second hand gear, although the market for second hand gear is very low and people expect to pay next to nothing, the cost for good gear here is very high often twice what you pay OS, the only items that generally do not get outdated are the mounts and scopes (moreso scopes), cameras become virtually worthless within a few years, so when I die all the gear I have, I'll bequeath to a local school, if they want it, with a name plaque attached, so some student may wonder while using it who the hell I was
