Yeah, enzymes cost money but investing in our health isn't a bad idea IMHO. Lita has hundreds or thousands of clients all over the world, and makes a living at it, and probably has loads of success stories.
Some of us have to work harder to get well though. At one time plant enzymes caused problems for me. They are actually made from a mold, so anyone sensitive to molds could have a problem with them. They usually help my digestion quite a bit, but at this time I take Pancreatin instead.