check car a/c for free. determined it had low freon

my car a/c was not working as it should be and i was about to buy a freon booster at oreillys but then i decided to get it checked out because i did not want to make the situation worse since putting to much or not to much can affect the cooling. oh and btw the check is free. well so it was determined that it had low freon. got her filled up and I was even given some advice on how to care for my a/c since its a sports car.I would really reccomend anyone to come here. And just to let you know i went to CHICOS 4 months ago and it had bad customer service, everything was out of order and their knowledge on car ac was bad because at that time i thought my expansion valve was bad so i asked for pricing and they charge a lot and the guy told me he that it would not be guaranteed to be put on right since my car was a tricky car and that in the process of puting it on it could be broken.