I don't have any Ion cymbals for sale. However, I can recommend the Pintech TC series cymbals for use with the Ion drums. They work just fine with the Ion brain, and for their price point (very low) and their purpose (playing a video game), they're perfect, and I think better than the Ion cymbals.
I may sell one of my 14" cymbals if someone wants one, because I've been thinking about replacing it with a 16" (nothing wrong with the 14", I just want a bigger one to use as the ride for aesthetic reasons).