Vortex Sound Research

Hey guys! I totally fell in love with the NDLR after spending the day watching video's of it. Would love to pick one up! Are you guys adware of any good alternatives? The NDLR isnt available on the website, and they go for more second hand then new, which is kinda against my principes.

I am looking for a chord generator for live jamming, since I don't know piano chords.