This is the problem with noobs.
If a fish is bred to such an extent that it is cheap as chips, the fish is not seen as a rare specimen, but more or less as a disposable pet. Just think 40 years ago when some very common cichlids such as angels and oscars were never bred before in home aquaria on a large scale. Thier prices must of been through the roof. As time went on, they bred more often thus reducing costs. At the end of the day, if RTC's were bred so much that even a 6" could cost under 10 bucks, just think of the problems in the future.