AA recognized a gain of $67 million in the fourth quarter from its forced sale of LGA slots to WN, so I suspect that the DCA slots will go for a lot of money.
DL and UA did not get the slots due to they are not LCC's, as it was stated from the get go that the slots would be awarded to LCC's. Not sure (still) if the slots at the other 5 airports, are just going to LCC's, hope so, but doubt it. Stay tuned folks, it will get more interesting indeed...