I am very happy to join the Astrobin community. Not a paying member yet, but that will come very very soon!

I am new to the hobby, receiving as a gift my first telescope in 2020 during the first pandemic wave. It was a 150/750 newt on eq3-2.
Quickly I got hooked on trying to get pictures to reveal the Unseen. But I did struggle a lot with the lack of access to astro clubs and the jungle of astro forums with contradiction statements.
I wish I had discovered astrobin sooner!
That said, I am now looking for second hand equipments to level up my setup. For instance, a good focale reducer / field flattener for my esprit 120. Is there a selling/buying section on astrobin forum? Or anybody has a an advice for an online forum selling gears close to my swiss home?
Clear Skies,
Stephane