Tom,
The set I built was labor intensive and would cost too much. If I could build several sets I'd farm out some of the machine work and get the costs down. The ones on my engine have a ratio of 1.85:1 so I could get the lift I needed. However, the ratio could be whatever someone needed.
Panic is correct on cam loading being directly related to spring pressure and rocker ratio.
I'll do some more research into this and see what I can come up with regarding cost.
Ron
