I have a collection of power armor superstructures (just the naked frames) in my workshop. I tried to wear one and go to a vender to sell it but I cannot find any way to sell it.

Are these frames not worth anything or are they just not included in the barter system?

Dump them ;p

I couldn't find any way too sell them so used them as decoration instead. I have a half dozen lined up along the "wing" of the diner at the Starlight Drive-in... Quite imposing as you walk in to it!

Its weird you can buy them but you can't sell them, there needs to be a way to pick them back up into your inventory.