I checked to see what this looked like now that it's been unlocked.

And well, noticed something that needs to be fixed.

You are shown 8 DOFFs, but only 4 of them are available for purchase.
Because the remaining 4 are KDF and not accessible to Starfleet.
Likewise, on the KDF side, the reverse would be true.

So why they put 4 DOFFs in the store that aren't purchaseable?

I think they need to amend this store so it's tailored specifically to the faction of the character you are on.