These are some breeders of Khao Manees that you can try contacting:

Lynnsey Mostad in the US

Rungrat has a 5 month old male odd eyed kitten for sale (mobile:089-2022083). Left eye is green-amber, right eye is blue. Vaccinated, health and vaccination records available.

Frederic Goedert (fred.goedert@orange.fr) in France
Khun Triwitt Threelerdratana (tipnapa.phu-anusornchai@kodak.com) in Thailand
Khun Preecha Noonpong (jack_rus@hotmail.com) in Thailand (mobile: 013617598)
Khun Somhathai Latiwan (somhathai12@yahoo.com) in Thailand (mobile:+6651718551)
Khun Sarisa Khagaduke (sarisa@p3con.com) in Thailand (mobile: 01-4276736)
Jek has a number of Khao Manees kittens for sale