If you have a het albino male, you NEED het albino or albino females to make albinos ... you don't need normal females to make albinos (because you can't make albinos with normal females) and buying more het albino males is pretty pointless ... so if you own a het albino male and you want to make albinos, albino females and het albino females are more valuable to you than het albino males or even albino males will ever be. As a matter of fact, if you owned a het albino male, it would almost be impossible for a breeder to sell you a het albino male even at a super cheap price ... but if you own a het albino male and a breeder had het albino females for a little more than their het albino males and you had the money to spend ... you might think about it. The breeder is asking a little more for his het albino females because there are 100's of people out there with het albino males all looking for het albino females to make albinos with and the breeder sells them pretty easily. Unfortunately for the breeder, the list of people looking for just a het albino male is pretty small.
Using your logic, sure, you can make 50% possible het albinos all day long. But producing an albino in the long run is far more valuable than any profit realized from all of the possible hets that you produce combined.
-adam