I too have noticed a slow and steady decline in postings on astromart. I never subscribed, I found the process & conditions unsatisfactory for some reason
I just don't go there anymore, haven't for close to a year for so much as a sticky beak.
May I suggest the Cloudy Nights classifieds in place of astromart. No subscription fees or unreasonable rules and conditions. CN runs very much like our valued IIS - many thanks Mike & mods.