possible hets are a good way to go to! you have to buy from someone who you trust!!
you could get one 100% het male, breed him to 3-4 poss. het girls. this is a good way to get morphs and hets at a fraction of the cost.
multiple girls gives you more chances to hit the odds. with only one het pair, all your "eggs are in one basket" so to speak.
vaughn