Pet Barn in Franklin Square has one. I think it was 80 bucks.
I know I've seen one in a store recently but cant remember where exactly. It could have been either Northern Aquarium or Fishtown USA in Flushing; or possible pets warehouse in Copiague. (Sorry I cant be a bit more specific).
I believe Aqua Hut in Coram has some. Contact Don on Facebook at the Aqua Hut page and he will let you know.