I know this is a radical thought, but how about buying some castanets and recording them? I have a pair in my closet that I'll rent to you for a reasonable price. 

http://www.musiciansfriend.com/search/search.jsp?sB=r&question=castanets

Thanks for your input daveny5 with the j/k smiley.

But I did check out the the castanets at MF even though the one in beatscape served my purpose perfectly.

I needed the castanets in a sound effect type of format so using them with some delay worked well. 

As it turns out the castanets(at MF) with reviews are all negative.
But thanks for the rental offer.