The only way to acquire AIR boosters is the complete certain steps in the AIR career program.
As it stands right now, the only items that the players can buy from these stores - correct me if I am wrong - are the alliance and corporation emblems for each ship of the main factions and some “others”. And that’s it. No other unique items specific for these stores.
Since I have all the emblems I want, and to be fair I care little about them, the EveMarks have been steadily accumulating so I would like to suggest that the boosters are added to the paragon stores and players are allowed to buy them with the EveMarks they have. They should be account bound and thus be integrated into the account inventory that I have suggested previously, with no option to be sold, but if someone insist on making the marketable I’m fine with it.