8 week A330/340 course bond is approx £12000 at CX. The bond runs for 2 years and runs from completion of the course and is reduced pro-rata. Bond includes accomodation (not cheap in HKG) and Per Diems, actual cost of the course itself is only a small part of the bond.
My feelings, not unreasonable to bond for training, but to include accommodation and allowances, in my opinion, is a bit much.