I have a brand-new Nimbus II 20" frame with seatpost clamp I’m willing to part with. It is in mint condition. I was going to build it up with a 20" wheel, but going even bigger instead. I would take $50 + shipping, but I will accept offers and might be willing to split or cover shipping, depending on your location (this would be coming from Idaho, USA.) It won’t hurt my feelings if no one is interested, but I figured I’d throw it up here and see if anyone is looking to adopt a Gremlin for the holidays (I wouldn’t get it wet, though!) 
Sorry, about the bubble wrap reflection, but hopefully you can tell there is no problem there.
Here is the link for the specs from unicycle.com: https://www.unicycle.com/nimbus-ii-20-frame-black/