Why buy used auto parts?
One should buy used auto parts for the obvious and most important reason of affordability, also there is another reason i.e. availability. As these parts are easily available from online stores to junk and salvage yards. I also support the use of used auto parts. In fact most of the parts of my car are replaced with used ones; recently I bought a used alternator for my Ford from autopartsfair.com and guess what, I saved a handsome amount on the deal.
Yeah, I do agree that the foremost reason of buying used auto parts is the affordability. As these parts are quite economical anyone can afford them and can save huge amount of money. But, you should not buy it from any random place that you come across online, do your inspection before dealing. I have searched out plenty of online stores when I was looking for a used transmission and finally found http://allusedparts.com/transmission.html to be quite authentic and reasonable both in terms of price and quality.