I know the enite kit is around $250 as I had checked into this at the begining of the 2012 season. I just have not had the extra money due to other engine problems that needed to be fixed.
I have been looking for a used one too but I am not having too much luck with that. If you find someone that has more than 1 used, let me know as I am still interested in getting one for this season.
Scott