Agree. Because the Certified breeder's price are normally out of most people's budget, therefore you get black market (BYB). This is certainly one of the contributing factors. Unfortunately, good breeders also spend a lot on the pets, so need to recoop back the investment.
This is very similar to if you wanna discourage people buying pirated CDs/DVDs, the price of authentic DVDs has to be adjusted. Then, also add awareness campaign.