The market on Petabys station has received a boost today, and it has reset to a new set of wares.
Instead of selling single fighters, it now sells full squadrons.
Corvettes can now be bought as well.
These share the same 5 day cooldown. You can buy once every 5 days, either a squadron or a corvette, and the wares change every 3 weeks.
Be careful though, your goods can be shot down once they're bought so get outside quick to dock or hyper away!