Crystals are a fact of life in Ivalice, as well. I hope your time in Alfitaria means you will find it easier to adjust, then. Did they have Mist and magicite, as well? Skystones are a type of magicite which gift flight to airships.

[Mjrn points to various shops as they come into view.]

That is Migelo's Sundries, the local source of healing potions and such. You will also find shops for weapons and armor -though you seem not to need them now- as well as magicks. There is a tavern at the far end, called the Sandsea. It has a hunt board, in which various petitions are posted. I often visit for that reason.