Those that are saying "all hype" make me laugh. You don't understand supply and demand much. I guarantee that if Utter Chaos were selling 10-polyp frags for $5, you would run and get em immediately. If they were selling for $5pp, or maybe even $10pp chances are most of you would still be running to get them because they look so freaking cool and are so bright. HOWEVER, since they are limited in supply, there needs to be a delicate balance between how much people are willing to pay for them, and how available they are. They are currently going for roughly $40pp so that the limited supply will last. I can hype eagle eyes and radioactive dragon eyes all I want but I'd be lucky if I can give them away anymore. So sorry it's not hype, it's USUALLY supply and demand.
I agree that SOME Zs and Ps are hyped by vendors, and people buy them for $100pp because they think they are getting gems. Now after the initial vendor sale, the hobbyist's first frag is the determining price IMHO. Try selling that $100pp gold paly for even half when every LFS is getting shipments of them and every vendor has them for $10-$20.