Regarding UPS it'd be much cheaper to send via DHL. I never used to until I found out my 26" bike shipped out for $28 😄 UPS would've charged me easy $50......
I flew with my kh24 a few weeks ago. I just brought the uni as-is and handed it to them as a piece of luggage. No problem. They decided they wanted to stick it in a bag like they do car-seats. ro