dude,i live in india.in india i can buy discus at a comparatively lower rate.the primary thing for selling discus is to check the health of fiscus fish.at the same time price is a factor.but 2574 is too much.i am sure that its cost is not much that.it may be somehow 70-80$ for 4-6 inch adult discus..i also have a blog about discus fish.here's the link...
Discus Fish Care Secrets
you may visit there for more info.

Heya...just checked out your album. I have been dreaming about and doing research on setting up a discus tank. There is alot of good infor out there on how to set things up but alot of mixed info and warning info on buying discus from just any place. Have any opinions on where to find good healthy discus without spending a fortune. My local fish store that carries discus have palm size discuss for $257 which is a bit beyond my budget. I was shocked at the price,but not discouraged to one day own some of these lovely fish. Have any advice?