Must be 23 years old by the completion of the approximate 4-year program.
. . .
The cost of Gateway Select is approximately $125,000, payable in installments over the course of roughly 15 months. We are currently exploring multiple options for financial assistance to help alleviate monetary barriers to this program. Check back in the near future for more details.
So the $125K must essentially be paid up front (15 months into a 4-year program), and Jet Blue has yet to get firm financing deals.
I suppose the good news is that a lot of this training will be portable, unlike most MPL courses in other countries.