I am much more interested in the support vessel costs - and for those my guess is 1 billion. Fleet carriers: 3 billion - or with all upgrades: 4 billion.
Credits won't be the issue... Everyone can afford a Cutter or Corvette, it's the grind wall you will have to endure to actually get one.
King ? Admiral ? Both ? Triple Elite ? Something else ? My bet it'll be affordable to the billionaire class.. But the grindwall to get it... and the cost of modules... THAT WILL HURT.
In response to player complaints of Grind, FDev has invented a mechanism to take time off of a player's mortal lifespan. Unlocking the new Carrier will shave 48 hours directly off your lifespan, skipping all Grind!