I put my Harp Guitar up on Reverb. I thought I would cross post it here in case anyone is interested.
https://reverb.com/item/56967939-timberline-acoustic-harp-guitar-model-t20hgcIt's lightly used. I like the idea of it, but just didn't have time to really dig in and learn it and decided to concentrate more on 6-string guitar. Now that I've decided to jump back into the chapman stick world, I don't see ever really learning the harp guitar.
It does sound really nice. While auditorium sized, it's obviously got a much bigger body to deal with the harp strings so it gets a really nice sound out of it.