They were $5.49 each. According to the package: they trap phosphate, nitrite and nitrate, reduce organic matter accumulation, controls odor, and keeps the water clear.
kfryman- I will test these out this week and see if they help the water like they say they do...I'm not sure of the price on real ones, though i want to try a real one as well..
purplemuffin- Dead? The fake ones or the real ones? I've never seen a real moss ball dead. If it was the fake, then that's nasty because apparently they last about 2-3 months before they need to be changed.
OKay here's a picture of one in my new betta's tank... it looks real enough. the fibers even move with any currents...