Most people dont realise how hard running a LFS is and what may seem to be outrageous prices to some are in fact quite reasonable when running a 7 day a week, 12 hour a day business. Livestock is a risky business that isnt insured.
While there may be cheaper places available, most cheaply priced outlets have gone bankrupt or not lasted. Its amazing how many people want RARE/QUALITY and CHEAP in the same fish or product. I respectfully suggest you simply not buy fish you think are too expensive for you. If someone is buying them then they are not TOO expensive. Besides, you havent seen EXPENSIVE fish until you have come to Australia.
oops hope this doesnt come accross as too critical but thats how I see things.