Regarding your fly away (or systems) costs, there is another, related measure:

Cost per flight hour (CPFH), which according to https://en.wikipedia.org/wiki/Saab_JAS_39_Gripen#Operational... (sourced from Janes)

is sligthly under 6.000US$ vs. anything between slightly over 25.000US$ to slightly under 40.000US$ depending on the type/model of F-35.

They also got rid of the 'clock shop', just look at that!

https://en.wikipedia.org/wiki/Saab_JAS_39_Gripen#/media/File...

(in addition to HUD/HMD)