Paying for your rating is just your most significant outlay with airlines these days.
Not specific to Tiger, but: Pay for travel to and from interview plus accommodation. Pay for any psychometric testing. Pay for any medical examination. Pay for Jepps, uniforms, dry cleaning, meals etc should you get a position.
Also, amazing how all these airlines want you to be highly experienced and current on their type of aircraft, IR renewal already out of the way for another 11 months 28 days... Does anyone want to pay anything for training, personal development these days?
Reason. They need that money to pay for the AVGAS, and in a few months they will have to raise fares or introduce fuel surcharges again, cause oil is climbing and there aint much fat left to trim.