I was recently looking into sending a bicycle back home, here’s what I found:
- Chinese airlines might let you take it for free
- American carriers like United will charge you something like $100 to send the packed-up bicycle
- You can also ship it from here (Natooke offers this as a service) for around $160 USD if I’m not mistaken
This information is from Natooke. I would visit their shop and ask questions if you want to get information from the most authoritative source.