Cheap, and profits go to a good cause. Scroll down a bit for the HCL and MSM - you can get them both in bulk.

We don't need it, but we've used it for years on our dogs. Makes a huge difference as they get older.

I've referred many folks to the above site, and they were just as satisfied as they were with the stuff they paid insane prices for at GNC. Even though it's directed at dogs, they do have independant certificates of analysis available...something you can't get with the store bought stuff.

Nobody's croaked yet.