I'm also dealing with cyano issues at the moment, if you reduce light it also dies off. Not the "best" way unless you have alterate ways of keeping the corals happy, but it is very effective at ridding the tank of cyano.
I'm also looking at doing a possible group buy with www.piece-of-the-reef.com, I have contacted them and if we hit $500 we get free shipping, I have a post about it up in the general discussion area.
If I get enough interest I will go ahead with the order, Christina is really good and her prices are very fair. I don't think I've paid a listed price yet and my prices on snails have been well below her website. I'd imagine if we hit big quantities of snails it will get even better.
Let me know who's interested and I'll get with her for a full quote.
Thanks,
Kevin