Great score, these are hard to find, I paid a smidge more for mine. We love it. Just figure you paid the going rate, if you lose a couple hundred so what, that's the price of playing it for a few years!
Congrats on being a new pin owner, start learning what you can. Buy novus 2 to clean, then wax using carnauba, wax frequently. Should also replace balls, especially if it is a route machine. Cliffs makes great protectors as mention in a previous post. LEDs make this machine awesome, I put coin takers in mine. Might consider cabinet protectors depending on its condition, under cabinet lighting is cool too!
Finally check your software version upon start up, might want the newest from stern, good luck! Enjoy!