There are different places one can look for auto parts such as local specialty stores, online stores or auto parts auctions, and last but not least junk or salvage yards. Every place has its pros and cons.
The old starter is placed in a box and sent back to the rebuilding facility. It will be rebuilt and replaced with new parts to make it work properly. It is then sold back to discount auto used parts stores.
Many auto body shops work with insurance companies on the repairs. Some of them will even handle calling and dealing with your insurance company for you. Many times the insurance will pay for the repairs or at least part of them. However, many people find that auto body repairs can be completed for such a low cost that they just pay out of their own pocket.
You could be faced with a lot of options when you shop for your car part. You can get information online for what you need. The parts dealer should have a website. When you go there and find the right starter, you may be surprised. There could be a list of items that will fit your car. You may have to decide between new and remanufactured. You might also have the option of a long or short warranty period.
What that means is that you will either need to find parts that are interchangeable or you will need to modify existing performance parts to fit your needs on that particular vehicle. Either option is not for the novice. You will need to know what to look for are you wanted to mix and match car parts for an older vehicle. In order to modify parts, you will really need a good grasp on mechanics and in some cases, advanced engineering.
There are a number of online stores which offer discounts year-round. You can take advantage of such offers. But one must verify the make, brand, color and suitability of such parts, especially if they are offered on heavy discount.