Among the auto parts that wear out fast or gets frequently damaged are the body panels and other exterior parts such as the bumper, the door, the tailgate, and the wheels, including the tires. They are exposed to a lot of corrosive elements, which speed up formation of rust.
Not long ago people were skeptical about purchasing online. It was new and with many things new, it takes time to catch on. Once people saw that it was safe and much more efficient the boom was on. eBay was the catalyst for getting the online shopping phenomenon off the ground. Who wants to drive around town looking for performance shops which might or might not have what your looking for in stock. Much easier to sit next to your computer sipping own a cold one while checking for your hard to find parts.