It seems like there's a healthy amount of Foley instruments for Kontakt nowadays. Here in the Pandora Machine we tend to use some instruments, some real Foley (making some sounds in front of a microphone), cut effects either from libraries or field recordings, and the ol' trusty -- actual production sound.
The Foley Collection is a fairly big set albeit with a lot of misspellings. It's 600 Euros.
The Edward Suite by Tovusound is $400, but there's a "light" version which is $79.
Big Fish Audio makes their Virtual Foley Artist available for the weird price of $226.24
Alejandro Cabrera has his own Foley instrument for free.