By the time you purchase individual rockers, spacers, stand kits, and shafts you've already met the Erson price.
The other parts have the advantage of being able to acquire them piece by piece, while using some original stuff in the interem. They also freely interchange between each other and stock items for "roadside/trackside service.
The Erson deal is just too easy. The cosmetics approach rudimentary - no plating or anodizing, and square edges on machined stands - but I have them in numerous engines at this point, and the only breakage I've seen is a forum member who has been running them way beyond the design envelope. He may chime in, but they are on a .750+ lift solid roller that runs a full race season. He eventually broke one shaft. And ran with the broken shaft a time or two anyways...scary but impressive.
