Better question is why is Cryptic selling the beginner's uniform on the C-store....
maybe because it's not a beginners uniform and instead is a "classic trek episode uniform variant"?
cryptic has ALWAYS sold "classic tv uniform variants" on the stroe. garenteed cryptic isn't going to put new characters into SFA wearing a cadet uniform. it'd be from a customization stand point pretty stupid..
as it'd basicly mean restricting you to ONE uniform at character generation.
or even WORSE, letting you pick a slew of uniforms and then putting you in a uniform you did not pick for your first level (and may not like)