Man, if I had the gems... That Krane has been on my wishlist for awhile.
Though, maybe to help give you a price range, a friend of mine gifted me a Chiropta back in May after I was dealing with some medical issues, and I remember them saying they had bought it for 5kg. I have no idea if that is usually the going price or not. But, maybe it could give you a little insight on a starting price point? Good luck on selling these though! :)
