So for anyone who cares, yesterday, Pqube finally added the one missing White Day Christmas Outfit (for Sung-A Kim) to the store. Unlike all the others Christmas outfits that were added last week, this one is not free ($1.99.) They also added a bundle of all the Christmas Outfits for $9.99.
So yes, that basically means you can currently get the entire collection of 7 outfits by either paying $9.99 for them all in a bundle, or paying $1.99 for Sung-A Kim and downloading the other six free. What in the world are they thinking?
Anyway, given this turn of events, and the fact that none of the outfits are free on Steam anymore, I say it's only a matter of time before those Free ones flip to $1.99. In other words, get them while you can.