Originally these uniforms were a promotion item which could only be earned by redeeming a code in a set of DVDs/Blu-rays. The internet of course quickly found the code, and it became common knowledge how to get them. We simply added them to the C-store as a free item so new players who did not know about the code could gain access to them easier.
Originally Posted by AngelSilhouette
That is a rational reason; however, it is also illogical.
If one wants them to be accessed with greater ease, then make them a default uniform choice; that way they can be accessed from within the character creation window for new players.
Maybe it's a way to help "train" new users to use the C-Store.
The thing was that the TWoK uniform was supposed to be a promo with the Season Three TOS Blu-Ray set. Unfortunately, some idiot put the same code on every sheet, the code got leaked on the Internet, and soon everyone who knew about it got it for free.
I was one of the ones who bought the Blu-Ray set and put in the code "legally". It didn't really bother me that it essentially became "free" as I bought the set for the discs and not the uni.
The above is why it's free on the C-Store. If it wasn't for the blunder, it would most likely have cost the same as the other costume "packs".
It wasn't just the season 3 blu-ray. I got my code in a Best of TNG DVD, with four good TNG episodes. My friend got his in a Best of TOS DVD, as well.