expensive coral

I posted a thread wondering what a mushroom was and I came to the conclusion it was a jawbreaker. The small one which is the size of a dime has a yellow streak. I was wondering the price on a jawbreaker with a yellow streak on it. I will attach some files but you can't see the yellow due to the...

I've been wondering about this for sometime now, but what makes certain patterns and colors so rare/expensive? In the terms of zoanthids and palythoas, what makes a certain color morph so special? Or when it comes to acroporas and anacroporas; they look alike but you can find some really pricey...

Found another shocking price (and name), one polyp for $400. Edited photo to keep it family friendly