If you are a professional mechanic, then you always want to be sure that you give your customers the best quality service at the lowest possible price. This means that whatever parts are needed in order for you to be able to fix your car, you need to be able to find affordable prices for your customers. They are already paying you for your labor, and so adding expensive parts on top of their bill will just cause them an even bigger hassle. Because you care about your customers and you want them to return to you whenever they need help with their cars, it is essential that you do whatever you can in order to provide them with the lowest possible rates.
Of course, if you give them cheap service with cheap parts and they end up continuing to have problems, they are also not likely to return to you for service on their car if they feel as though you did not do a good job or you installed faulty parts on their car. This is why re-engineered car parts are the best of both worlds. You can not only provide excellent prices to your customers in order to undercut the competition, but you can also give them high quality parts so that they will be set for a long time. The less a customer has to go back to a mechanic, the more likely they will be to trust the mechanic.
If you run your own shop, or if you just work on cars in your spare time for a little extra money, being able to provide high quality, affordable parts to your customers is essential to gaining returning business. Even if you just work on your own vehicles, being able to save money on good parts is definitely a plus. The best thing that one can do is to search the internet in order to find the best quality at the most affordable prices. If you can do that, both you and your customers will end up being happy. After all, any business is about providing the best services that you possibly can.