Genetics question

[Snakefood]

I was looking up the rare morph of "Palmetto" Corn Snakes and found that the only person to breed them sells only females. He states on his site that he does this to limit the flooding onto the market of a new morph.

So I have 2 questions that popped into my head while reading this.

A) If he is holding back the males in order to stop the market from flooding, does this mean that males hold the color/morph gene??

B) what does he do (do you think) with all the males?? You would think eventually he would be flooded himself in male Palmetto's!!