I can see where this could impact the market for one, or maybe 5 sales, but it won't crash the market on a good morph if all the sellers know what they have. If someone sells a coral glow pied on morph market for $100, MAYBE one person who has one may sell it for that just know knowing what they have... but for the breeders who have been working for 5 or 6 years to produce such a snake and know how rare they are, and who know and understand the market, are still going to ask a respectable price for their snakes. So yea, maybe a clutch or a few snakes will sell for cheap, but I highly doubt a truly high quality morph would drop in the market this way. If it does, maybe that morph shouldn't have been priced so high in the first place.
***This is totally my unprofessional opinion. I'm not a breeder, nor a long-term keeper. Just an opinion I have from things I've seen before for items I've purchased or services I've rendered or paid for.***