I bought a used alternator for $45 a few days ago from Brinckman's. First of all, the owner has a very bad attitude. He was very reluctant to answer my questions; he acted as if waiting on me was inconveniencing him. Before I paid for the alternator I specifically asked him if they test them before they sell them. He replied, ""Yes."" So, trusting him, I bought it. After putting it on my car and finding out that it did not work, I took it to Auto Zone to have it tested. They said that it did not work. I called Brinckman's and told him about the alternator not working. He said to bring it in and he would test it, and if it didn't work he would replace it. I brought it in to him and he tested it and said that it did not work. Then he went back to the testing machine and ""grounded it"" and showed me that it did work, he just forgot to ground it before he tested it he said. He also said that Auto Zone does not know how to ground my kind of alternator. I called Auto Zone. Their reply: ""Their testing machine automatically grounds when it tests."" So once again trusting Brinckman's, I put the alternator back on my car and it still does not work. I went into Brinckman's today to tell him about it and get a replacement (like he promised). He said, ""Auto Zone does not understand how an alternator works. I'm not going to compare apples to oranges and I'm not going to dispute this any further."" My reply, ""So basically there is nothing you can do for me?"" Brinckman's, ""I can credit the $45 from this alternator to a new one"" (which he says is $145 and I price checked around and they are $94. His reply to my saying I price checked and they were not that much: ""Mine are lifetime warrantied."" I said, ""So are the ones I price checked."" He said, ""Well mine are not."" So, basically the owner of Brinckman's promised me a working alternator, wether it was the original one I purchased or a replacement one and is now saying there is nothing he can do for me unless I purchase a brand new one from him. I will never shop here again. The owner's attitude is horrible and his word is cannot be trusted.