That's true. They are very fragile when young. That's what makes it a good deal for the OP. If he gets one to survive out of the 3 he still only paid $11 rather than $30 for one fish and hope it survives.True a steal, but I had 6 of these in my tank from fry. 3 of them died suddenly and for no reason, I took them back to the shop (the dead one) and the guy (who has never steered me wrong before) said that is common amongst EBJD as they are a recessive gene and as a result so can be VERY fragile, and some just flat out die!
He refunded me the cost of the 3 dead ones, and the other 3 flourished and were great!