While most of the readers on this forum would rather build than buy, there might be a few readers interested in a well-sorted, seriously quick DB1 track bike / racer..
Interesting times up here in The Great White North, so I'm putting the DB1 on the market. It's on eBay now
http://r.ebay.com/qjGa6L. Lots of pics at
https://www.flickr.com/photos/loudbike/sets/72157634524192692/It ain't cheap, but it's damned close to perfect..