Quote from Audial on 17 July 2020, 1:10 PM

You are free to sell, buy, or exchange here used Audial equipment, and associated parts. This applies to both regularly produced and to the units built as Audial DIY projects.

30 Apr 2021 update: We have just installed private messaging software for the community forum. A post author data now includes a private message icon, which makes possible direct communication between community forum users, and it does not expose e-mail publicly at that. The private messaging feature is available only to logged-in users.