up to 1000, thats for a special fish that i may dedicate a tank too. i havent found that fish yet, but i can see that being my limit.
up to 200 dollars for a fish that maybe the star of the tank, if i ever set up a salt tank again i would want a mystery wrasse.
casually(relatively speaking as none of my stocking choices are impulse buys) buying a fish for a average tank i own up to hundred dollars. so far i havent reached that either although i did get a couple of 80 dollar fish a couple years ago, tangs.
as of now none of the fish i have my eyes on would run me more then 60 dollars. just remember theres alot worse stuff you could spend your money on. i really regret my 1500 dollar tv, it was a great deal at the time but sometimes i think its to big(50 inch panasonic, 1080p).