This information comes from Subterranean Press:
"We recently purchased the last few copies of the Lettered Edition of A Clash of Kings by George R.R. Martin. A few long-time lettered edition customers snapped up most of the copies, but we have one left.
Because the demand for this book far outstrips our supply, we’ve decided to hold a one day raffle for the rights to purchase both the Lettered Edition of Clash and preorder the same letter of A Storm of Swords. The two volumes will be $1100.
At the end of the day Tuesday, August 2, 2005, we’ll draw the name of the winner and offer them the books.
This may be your last chance to get in on the lettered editions of this landmark series."