As far as the topic, it IS sad to see people devalue their own investments...but that is what they do. If more people exercised both quality and quantity control, the price drops would be much less pronounced. Instead, people breed indiscriminantly, and many "hobbyists" produce far more animals than they are willing/able to care for. Selling them quickly is both a goal and a necessity for them...which, of course, speeds the descent of the prices.
Further, far to many people jumping into breeding focus on cost over quality. Whether they don't understand, or just don't care, the concept of getting what you pay for is lost. Buy the cheapest example of morph A, regardless of appearance, and breed it to the cheapest example of morph B (or 5+ normal females that won't compliment morph A; but, hey, they'll make babies).