are polyps supposed to cost something? i bought some live rock out of one of the display tanks, from the store's new guy. it is covered in mushroom polyps, and the guy charged me 4.99 a lb. there are like 30 in all, ranging from 1/4" to 2"+. the total was $15.00, my question is, is that good? i dont want to mention it at the store and get the little guy in trouble, he reminds me of harry potter and is like 16. i would however like to go back and buy the rest of it if it was'nt a fluke. thanks