Drok's is the first place you can buy max armor. Collectors generally give one level of armor higher than what is offered by the nearest armor crafter - a trend that begins way back in Pre-Searing.
The Crystal Desert is a wonderful place for a new player - I think it's just about unique in that there are no quests that lead to any of the mission towns or outposts; you have to find everything by good ol' exploration.
I must say that it does become a pain when you're taking your 15th character through there, though