As much as I like to save a dollar, I would search high and low for other areas of my life in which I could be frugal loooong before I'd use any type of homemade solution that could potentially mean risking my sight.
If money is really low, consider using plain old eyeglasses. I have a fairly expensive prescription (can't do anything about that), but I only need new glasses every 3-4 years, and that's considerably cheaper than using a product that requires replacement every month.
I don't think Lasik is a bad idea at all, and it might be cheaper than buying contacts your whole life. I know a number of people who've had it and every single one of them has had wonderful, wonderful results. One person says, "This is the single best thing that money can buy." I know one person who had a bad time with the surgery, but her problem was an allergy to a medicine they used. Once that medicine was out of her system, no more problem. I will echo what a previous poster said: Your eyes are going to change significantly around age 40. It happens to all of us. I don't know what that means to a potential Lasik patient, but if I were considering the surgery, I'd absolutely research it further.