i have a pretty good stock of trinkets that could possibly cause my daily driver [99 carrotvan] to die, therefore if it happens, i can have it back up and running quickly.
anything else, i can plan for. that allows shopping around for the best deal.
i quit going to the one parts store in town that NEVER had anything but "the wax of the week", and they could get you what ever you wanted "tuesday". they then charged you UPS fees.
no thanks !