These things originated from about 8 polyps on a frag disc and have spread incredibly fast. I have several that were cut from the colony (shown below) about a week ago and are doing well on rock rubble in groups of 1-4. They would probably do even better with a brighter light than I have, as the ones nearest the top are a lot more colorful under the blues.
They're obviously great for beginners. $1pp or trade for cheap zoas or (yeah, i know, it'll also take over) long stem pulsing xenia.
Pick up in Chula Vista, on Broadway off the J St exit from the 5.