Sticking with the lessers... I sell females for 275, and males for 200.. Makes 0 sense.. I dont see much in terms of evidence that females are rarer then males.. I have have read of all females clutches, all male clutches and of course mixed.
You need to think in therms of combos

Your example of Lesser is true Normal to lesser will yeld the same results regardless of the way you are doing it however you need to think as a business person who makes an investment or collector wanting to better their personal collection.

Your male lesser bred to normal females will only produce more of the same this is hardly an investment, just more lessers.

If you get a female lesser now you will not breed her to a normal male (business wise this makes NO SENSE) you will breed her to another morph and will be on your way to make combos.

As a breeder you obviously do not want to breed a low end male to a high end female!

You need females to make combos and females are often held back by breeders and harder to find (at least with mid to high range mutations)