LOL. Absurde numbers. Have seen much less for a Global contract on a slave 2/1 (month) contract out of HK with one of the big ones around there. And 2/1 just IF the leadcaptain was not deciding to shoot down the only FO so it could become a "always on/ never off" immediately. Glad I turned that biz BS down and finally returned to airlines.
20k+ are dream figures. Ment only to attract more "cannon fodder", nothing else. Make that 15k(if not rated most likely they will deduct something here per month), housing at "base" is you business(which could become expensive in HK or Singapore). Unpaid commuting normally as well.
Might be some owner jobs around that pay commuting, but pure owner jobs are even more bound for desaster for known reasons.