Can anyone recommend using an A/C Stop Leak product?

What is your question?

I have had some rather scary high estimates to even evaluate my A/C issues. It is currently not blowing cold air on the coldest setting. I have read that these leaks are difficult to find, even with dye. And I have also read that the stop leak products will seal up rubber as well as metal leaks. There appears to be good sound chemical engineering taking place to help a person like me (low income) to fix a problem that could cost more than the vehicle is actually worth. I was wondering if someone has some insight on this subject (other than Amazon reviews). I do not want to become a crispy critter this summer!!