I'm looking at purchasing a 2"-3" White Tailed Bristletooth Tang from another hobbyist. Can anyone please give me an idea of how much this fish is worth when sold between two hobbyist and when sold in a retail setting so I do not over spend? Also, feel free to share any enthusiasm or disclaimers about the species as I do not know much except their behavior is similar to a Kole or Tomini Tang, they are expensive and pretty rare. I'll try to include a picture below.