Dan is right. It's illegal to take the rock, so the Orange ricordea is so expensive from here because the divers have to go down and chip off individual shrooms from the rock. What's left is a nice polyp with a little bit of rubble on it to glue onto another "legal" rock. We get $5 a piece here for them, so $7 in CA isn't too bad, considering the cost of shipping!
Now the true red ricordea is like $80-85 a leaf here retail (per shroom)!! Ant they sell like crazy!