I got a 500 dollar rock of it... approximately a foot and a half by 6" wide. It has anthelia, brown protopalythoa, one crocea clam (about 2" across) and a maxima clam (approx. 2" across)
It's a piece of shelf rock. The clams are seated in it with their bysis threads, so it all comes with the same combo rock.
Price is negotiable, and I'll give you pics if you pm me.