TCPILOT.
The way this works is as follows...... you actually work for your agency who in turn contract you out to KAL. KAL want a qualified B777 Captain. They will interview you and assess you in a B777 simulator. If they think you are up to the job then they will offer you a position (via your agency) subject to you getting the B777 on your licence. It's now up to you to go away and get a B777 type rating, and when you have it KAL will employ you. I don't know how much it will cost you as it will depend where you do it. Also you may well find that you run into problems with CASA trying to put a type on your licence that is not on the Australian register yet! It may prove quicker and easier, but not necessarily cheaper, to do an FAA ATPL at the same time and putting the rating on that licence. Perhaps someone who has already done it might leap in here, and answer the question for you.
The only financial commitment you will have to KAL is that if you leave within your first year they require you to pay back a training bond of $15000 (IIRC). This covers the cost of your induction course, simulator, licence issue, uniform and manuals etc.
You may want to give some thought to the following.
Your sim. assessment will be done in a B777, you cannot assume that they are giving you any allowance for never having flown the 777 before. The sim. ride forms a large part of the whole selection process, so if you underperform they may not be interested in the fact that you haven't flown the 777 before.
If you do join up you will only get 8 sectors (with a possible 4 more extension) to show that you can fly a B777, that you can fly using the KAL SOP's, that you can operate competently to a number of destination, and in airspace that may be new to you! No pressure just remember that you have left your B767 command and shelled out c$20K for this job!