heres the prices i got from Dave from daremotorsports.com
With 18lbs of spring pressure, you better have a billet rod & retainers. I use 12lb springs in my hop-up kit, which will achieve 5800rpms..good guy to deal with..
HD (single) Valve Springs.................$10HD (dual) Valve Springs.....................$28 Stock (steel) Cam...............................$38OR.225 (steel) Cam............................$55