"Jazz seen" is no longer available, i think it's out of print. Check the second hand book shops. But "jazz life" (including the 1500 $ edition !) is available on Amazon.com
Sorry to hear the news about Bill Claxton - Channel 4 news tonight over here had a nice little tribute to him, wish I could have recorded it.
Just dug out my copy of 'Jazz Seen' - bought direct from Bill and signed by him in 1999. He was a very nice guy as I recall, a delight to meet, very un-pretentious. RIP.