At the end of the day, coral frags follow the standard supply/demand price curve. Vendors charge a lot for named frags because people pay so much for named frags. If you really want to change how the game is played, stop playing.
If you see a coral online, at a frag swap, or at your LFS that you think is overpriced, ask the seller why that particular animal costs so much:
You: Excuse me, why does this frag cost so much?
Seller: Why that's XYZ Tenuis! Look at the crazy colors when I turn off the whites!
You: Yes it's a fine looking specimen. But it looks very similar to any other Tenuis under normal lighting. This one just has a bit of orange on the tips of the polyp under all blue lighting. So why the high price?
Seller: This is a limited release frag from Coral Farmer ABC. There are only a few of these, they're so rare! It's a bargain at this price!
You: It is certainly nice. However, I can't afford to pay $450 for a quarter of an inch of coral. Is there any chance you can come down on the price?
Seller: No, I'm sorry, I can't. This coral is far too rare, and you won't find color like this anywhere else!
You: I'm sorry to hear that. I agree that it's a beautiful specimen, but there are many other cheaper frags on the market that have similar coloration, even if they're not identical to this frag. In light of that, I simply can't afford this price.
If we as a hobby continue to buy named frags at high prices, then vendors will continue to sell named frags at high prices. The only way prices will change is if we stop paying the high prices. Be sure to actively engage vendors who sell expensive frags and let them know why you are not buying. Don't be rude or belligerent, and don't try to convince them that their prices or wrong or that their corals aren't great: simply reiterate that with so many colorful and cheap corals out there, there's no way you can afford to spend so much on one tiny animal. Money above all else moves businesses. If enough hobbyists say no to expensive designer corals, businesses will have to sell them cheaper. There's no alternative.
This is not at all meant as a slight toward
@chris3del because this is exactly what he did. I just feel like we really need to decide what's important in this hobby. Is having a "status symbol" acro frag, whose coloration you can't appreciate unless your nose is pressed to the glass of your tank, really all that important? I don't think so (and neither does
Adam over at BattleCorals by the way).