Pulstar Pulse Plugs

Has anyone tried those Pulstar Pulse Plugs instead of spark plugs? They're expensive, about $25 each. I thought I might try them in the 95' LT1. But for $200 and the nightmare of changing plugs on that motor, some feedback would be nice before I do that. Maybe they will come down in price if there are some similar products developed by other manufacturers. Check em' out here if you want:

http://www.pulstarplug.com/