Here is my take on possible hets:
Back in the day when a Pied was $25,000, Het Pieds were still VERY expensive. So, people would buy Possible Hets because they were affordable compared to the $25K visual price or the $7K per pair for Hets. It helped that almost everyone wanted a Pied too.
In today's market, my feeling is, if you cannot afford at least a Het pair, maybe you cannot afford to buy into that morph. Now before everyone starts throwing a tizzy, I mean this is the best possible way. There are great stories about people proving out Possible Hets. I have not proven one out-had three PH Hypos that came with my Hypo male, pretty much for free, and none of the three ever proved out. So, I might be a bit biased. But, if you can afford a rack, heat, food, etc., I would say get a Het pair minimun of a morph you can afford, from a well respected breeder, and work towards getting the morph you REALLY want at a later date. I am sure a bunch of people are going to disagree with this logic, and that is fine, it is just my opinion.