They offer a "Ladies day" $17.99 special for an oil change for female customers. According to the Pennsylvania Human Relations Act it is illegal to charge customers different prices based on Gender. If you're a man and they don't give you this discount when you go in on a Wednesday file a complaint with the attorney generals office and get them fined.
During the oil change one guy came out and said my right front stabilizer was bad. Once my car was finished the manager whom I'd argued with over the discount tried telling me all 4 of my shocks were bad and he didn't know why his employee told me the wrong thing.
Update: A few months down the road my car passed inspection with no issues. My mechanic said the shocks were fine. The reason they can do oil changes so cheap is by up charging customers for made up issues.