Well, I think it comes down to value vs. workload if you're a merchant who wants to make a living over the long haul. For example: If someone meticulously models a medically-accurate, perfect replica of the human brain (not something the masses would be interested in), and it takes them 400 man hours of modeling time, then they sell 100 units @ $30 per unit to the hobbyist market, that comes to $3000, or around $7.50/hour (if my math is correct). Meanwhile, if that same person takes the model to the high-end medical community, and sells 1 unit @ $10,000, then they made around $25/hr. A smart merchant would cater to the high-end niche market first in such a case, then if they make the sale, turn around and market the same item to the hobbyist market for much less. Can't really do it the other way around, or you'd stand to lose the high-end sale ($10,000) if it's advertised around for $30. Sometimes the high-end market would want exclusive rights, which means even more money.

---

Tools :  3dsmax 2015, Daz Studio 4.6, PoserPro 2012, Blender v2.74

System: Pentium QuadCore i7, under Win 8, GeForce GTX 780 / 2GB GPU.