I've been meaning to read this series for years; I was reading Dragon magazine when the Dark Sun stuff got released the first time around. And it's interesting; I actually like quite a lot of the TSR books (a liking which started with the Dragonlance books, a long time ago), and Athas is quite a way away from your standard mediaeval Europe setting. There's a bit too much sourcebook in explaining the world, but it's not exactly the only TSR book that's guilty of that. I'll read the rest of the series.