My new character, Kain, is a pure mage. So far, there's Novice Robes, Apprentice, and Adept - that I've found.

Just wondering if there are Expert and Masters robes as well. I assumed Tolfdir from the College was wearing Master robes, or maybe I read that somewhere or something... I don't remember.

I know the Robes usually show up the more you are leveled up. I only just found the Adept Robes for sale a couple of levels ago. Just wondering if they are in the game, because I've not heard of them on any of my other characters, who to buy them from, and how much they cost. I'm assuming they cost a lot. My Adept Conjuration Robes were about 4 1/2 grand.

yes they do become available at higher levels, not sure which level though i saw in my brothers game they came available so yes they are out there

There are and boy are they expensive.