The previously datamined Guardian of Tirisfal transmog is available for purchase at the in-game shop! It costs $8 and is available for purchase through May 31st.
In-Game Shop – Purchase the Guardian Pack set
If you choose to not spend money on this transmog set, you do not need to worry – The set is slated to appear as a Trading Post purchase between September and December of this year for the following costs, according to their tooltips:
