The most expensive part in this assembly is the Chain,cam.
Some items from this specific schematic: Washer,seal.10mm, Bolt,flange,sh,6x, Guide A,cam Chain, Tensioner B Comp,.
The most reasonably priced component used on the Cb600fa Hornet 2010 (a) European Direct Sales / Abs Cam Chain/tensioner is the Bolt,flange 6x14.