The first polio vaccine was developed using fetal liver tissue.
Rubella vaccine
Chicken pox vaccine
Shingles vaccine
All developed using fetal tissue. Which is strictly regulated by the government. No clinic is making money off of tissue. They may charge to recoup the costs of processing and transport, which is why the amounts quoted in the "sting" videos for tissue were $30-$100.
Studies now are on whether it can be used to treat retinitis pigmentosa, which causes blindness. It's gradually being supplanted by stem cells, but is still useful in many areas of research.
http://www.cnn.com/2015/07/17/health...sue-explainer/