Amazon.com currently has this at $24.69, but with 20% clipped coupon it comes down to $20.79.
Apart from the health benefits, this got rid of some strange BO I would get after waking up lol. I also don't have a stuffy nose in the mornings (someone told me it's to do with allergies). I started using it about 3 months ago, and I was looking to buy again when I saw this coupon. Highly recommended.
There's a bigger 100 Servings, 28.2 Oz tub, but this is still cheaper.