I purchased a Cal King that cost $40 with $45.00 S/H
I bought her because she is a rather interesting unique pattern.
I don't look it as "The snake is worth less than the shipping" - I look at it as "The shipping is a necessary expense".
By the time you feed, house, screen for parasites, etc. the actual cost of the pet is almost always going to be smaller than the necessary expenses related to owning the pet.
Next season I'm going to buy two male albino banded Cal Kings.
They are future mates for two female HET banded Cal Kings that I will hold back from my WC banded and Albino banded pair.
I'm going to get them from separate breeders just to add genetic variability to my pool, even though in both cases - the shipping will undoubtedly cost more than the snake (unless I buy additional snakes from same breeder). It's an expense of building the collection I want.