No sir, they are expensive because someone has lied to you that they are rare, uncommon and believe me, they bud just as quick as any other mushrooms I've owned. Many simply know more about names, prices etc, then they do about growing this very common Rhodactis mushroom. It's funny how you only see them is saturated blue ( actinics) only and in tiny or single polyps. I've owned numerous variants in the past 13 years, some the same colors you see today. They proliferated so rapidly that I had to split most of my colonies in half and remove half of them, and trust me, they were huge polyps. Anyone who really knows these Corallimorphs can tell you how to make them bubble up. These claims you hear are nothing more than another attempt to hype something that someone someday wants to sell to you to pay their mortgage off.
MUCHO REEF