This stuff is amazing and this is the best deal you will find for it! I have been using it 1 1/2 years now and have only bought about 3 in that time frame. Groupon usually has this deal once every 6 months or so, so don't miss out!
Go get it for $25 right now at Groupon!! Once you sign up for Groupon, use this link to find the deal.
This deal won't last long- usually it just goes one or two days, so hurry!