As Kraylen stated, all of the coral is wild at some point, ALL OF IT. Yes, coral does morph and when the coral morphs it typically makes it a rare pieces.
Everything has to be factored in when it comes to fragging coral. The most expensive chance taken is the fragging process. There are many times that a colony is fragged and the colony starts to receed, its the nature of the beast when dealing with live creatures. At that point its a complete loss for the vendor.
Almost everything that we (people) purchase is typically over priced. Think about the house that you purchased. If the house it 10 years old then there is a good chance that you paid twice the amount that the original buyer bought it for, yes twice. And when I say twice we can be talking about 150,000 dollar difference, not 100.00 or 200 dollars that we are talking about when it comes to coral.
Many people will read my comparison above and think, how can you compare the two.... Well, 100 percent mark up is 100 percent mark up no matter how much money is involved.
Now when it comes to rare... I am a huge fan of classic muscle cars. My dream care is a 1969 Yenko Camaro. New this car cost roughly $4500.00 and now a mint condition Yenko goes for about $300,000.00, that is one heck of a difference.
Again, it hard to compare a house (mark up value) and a car (rare value) to the value of live coral. But the concept is the same. If you are wanting rare then you have to pay the price and by the time you are the third owner of something you are going to have to pay the final market up value. Thats how is has worked from the beginning of time and thats how it will always work...
If you want cheap coral at its bottom dollar price then you would have to move to Australia or Indonesia and hand pick it yourself. Otherwise, you have to pay the collector, fuel for there boat, dive equipment, boxes, packaging, export broker money for there time (profit) storage/tanking. Then on this side of the world you have to pay for import broker, packaging, boxing and then of course no one is willing to house hundreds of coral for free therefore vendors have to have a small profit as well.
So, look at the process and you can see why this hobby is expensive.