It appears that the Kindle International is now $259. Everyone that bought it at $279 will be getting a $20 refund.
Along with this the US Kindle (Sprint only) seems to be no longer available.
It makes sense to me that they would drop the US only unit since the International unit works in the US as well, and having two production units would cost more to maintain.
via Engadget:
http://www.engadget.com/2009/10/22/a...ith-20-refund/