They are an endangered spieces (Just not according to India where they are native which is why they are available), that's why they are so expensive.. (as well as new to the hobby, and they've never been bred, they are all wild caught ATM.)
The site I linked to gave a price of 45$ US, sara said, 60$ at Edmonton, (seem to be in check) and the store here has 1 left for 35$..
As time goes on, they will come down in price , or they will be not available (due to extinction or India declaring them endangered), if you can get them for a good price, then I would, provided you have the space and need a centerpiece fish.. from the link earlier, they also look like they school, but @ 6" a school would be the entire tank...
They look much nicer in the second link.. (and they almost do them justice) Very nice if you can get some, just make sure to provide some current, since they are native to faster moving water...