am i being ripped off here? ok sat may 22. i was driving late night. a dog jumps out in front of me and i hit it. no damage to my car. got out to see if dog was ok. didnt see anything due to it being raining and dark. on my way back home 2 hours later. my battery light comes on. i make it home just fine. try to drive later on. but it cuts off. make it to shop on monday. mechanic(who came recommended by a few co workers) says i need alternator belt and belt tensioner. cost me 208 bucks. car runs fine. last night i go to drive. i noticed a funny sound. i knew something wasnt right. 10 min later battery light comes on. i can drive the car but the light just eventually keeps coming on. he tested the battery. not getting a charge. i need a new alternator. will cost me $300. is there a chance that maybe he did a wrong diagnostic the first time and i should have gotten the alternator all along. not the belt and belt tensioner. should i ask him to knock down the price because of this?? im thinking about just buying a remanufactured alternator from autozone. price is 130 and then ill get the mechanic to install it for 85.should i go that route or just pay the 300 for a new one.