There is also The Favorite by Charlie
http://www.nocturnal-light.net/fanfiction/story/30/The_FavouriteSummary: When Buffy is on her way to a vacation with Joyce and Dawn, their plane is hijacked, and Buffy is taken hostage. She ends up in a very foreign, Arabian Nights-like country and is sold into slavery. Guess who buys her...
Its still a WIP ut it was updated earlier this year. She also had it up on her site which i can't think of right now, but i think it was under another name
Edited to put right link