LoL is free, HoN is free, WoW Classic Vanilla is free, SCII Vanilla is free and so on. But items are NOT free. But the status (Premium / Legacy / etc.) is NOT free. Similar like. TF2 is free, but the status (Premium) it isn't + I don't know any other guy that still have left any TF2 Premium Gifts (which were purchased BEFORE that game to be made "F2P") left : P.
But ofc, you can add into your Steam Wallet €5/£4/$5 and then buy sth from the in-game store, and instantly be "Premium".