i picked these up for a dollar! they where under the sand bad in a tank at one of my LFS and i spoted one of the polyp pocking out form the sand and talked the owner of the LFS agreed to sale for the cost of a bag as he put it.
these have grown quite well and have the lest amount of problems with. got them in a frag pak and have done well from the start. only had a couple polyps but as you can see there are many now.
here is a picture when i got them and before i fraged half and gave them away to someone at a local meeting.