BSNinOK,
I am vaguely familiar with the pricey courses that you are talking about but I don't really know if attending one would be an asset or not. I've always thought they were most useful for the folks who are trying to break into research nursing, but not necessarily for nurses already working there. But that is my untested and unvalidated assumption...I may be way off base!

I was really referring to the certifications that you get from ACRP or SoCra and you are correct that you have to have documented research experience before you test for certification there. Good luck with whatever you choose.