Built To Spill are indeed playing Seattle November 17th. And it's an all-ages show, and it's $15, and it is a Dub Narcotic benefit.
Broken Social Scene are playing Seattle as well, on November 13th. $10, hopefully all ages, I don't even know.
I really would like to see both of these shows. And it might even happen, if all goes well. Could this be one of the oft-documented "Brian being filled with false hopes for plans that can't really be planned and just hoping all works out for the best" plans?