Hi!
Great!
The buyer will send funds to Swiss escrow or escrow.com. It will be safe and secure for you and buyer.
I talked to the buyer. GoDaddy and Sedo certificates don't meet the requirements (no copy in his native language and no trademark infringement verification). His bank accepts certificates from leading International Domain Trademark agency (owned by a famous payment processor from USA) :
http://intellectualpropertyaudits.com. They do the law compliance certificates and support English/Korean copies in PDF format. Go to this site and click Certification. Then submit your domain and wait for payment instructions.
If they approve your request they will send payment instructions via email. The certificates will be sent to your email in PDF.Send the certificate to me and you will get paid the same day.