How much are the refills for the Neutrogena Wave?

I got the wave, and I was wondering how much the refills are. And if you can, please include info on the best way to use the wave, your favorite kind of cleanser pads for it, where to get the lowest price on refills, how many uses you can get out of each pad, how much it costs per day... basically all the info you can give me about it.How much are the refills for the Neutrogena Wave?
I got mine for $12. And it was like 40% off.How much are the refills for the Neutrogena Wave?
$10