Reading it again, the wording is shady already. Total cost of the ACP is $84K and J* will fund 50% through sponsorship to a maximum of $21K?? If 21K is the max that's approx. $63K to sacrifice over your 6yr bond.... $15K gross salary sacrifice/yr
But if you want to start from scratch and do the Ab-initio programme it only costs an additional $16K for your CPL/MECIR/ATPL Theory (with meals, accom and transport in NZ). That part of it is cheap actually.