This is all written assuming you really mean you want a 'restored' pin - one where everything plays like new, looks like new, and is cleaned/reconditioned/rebuilt properly. Not just a playfield swap where you don't restore the cabinet, don't rebuild everything, don't polish everything, don't clean every single square inch of the machine, etc
Restoring a single pin yourself is never the cheapest route.
To restore a single pin, you're going to spend more in tools than you'll pay a competent restorer. Then, there's the learning curve involved with learning to use them. The average guy just doesn't have the correct specialized tools to do it the right way in their toolbox.
If you like this sort of thing, are meticulous, and think you'll want to do a few more, buy the tools and have fun.
If you just really want a nice AFM, have other things you want to do with your time, etc, write a check.
If you can find a core game for a good price, you can always buy it and send it to a restorer.