Hi Paul,
Good question, thanks for asking. Please go to this forum thread to see the forum guidelines:

Selling Your Gear On The Active Melody Forum

I always felt it was a good idea to just give my unwanted stuff to various relatives or friends. Luckily for me, my grandson is in a local rock band, so he’s always happy to get anything I want to give away. And I’ve given various instruments to other kids who showed an interest in music, but had no instruments. I guess it’s kind of a “Play It Forward” approach.