I don't remember about someone selling them in the hudson valley. What county are you in? Putnam, Orange, Sullivan, Ulster or Dutchess. I believe that your best bet is to go to one of your lfs and ask them to order them in for you.
I actually remember having seen a jardini in NYC at a place called 38 Aquarium. You are going to have to look the place up. It's one of those overpriced stores in Chinatown, but they had a small jardini. I remember that he wanted 40 bucks for it, it was in a tank with a lot of baby silvers. If you are willing to drive down to the city, call the place up first.