Those are probably solomon island cloves and are not cheap. Honestly, if the bubble algae wasn't present $60 for that rock isn't a bad price it's less than $10 a polyp for something rarer than most of the paly or zoa "morphs" I see some people shell out for. But it also depends on what they got it in for. Little known fact, stores also have to buy their stock from someone else, which is then reflected in the pricing, along with overhead. If you sold that for $10 you'd probably be losing money since odds are you payed more for that on it in shipping alone.