Here is what I do whenever I take PP on a game (or large) transaction:
-take a quick 1 minute video of the game's condition prior to pickup for cosmetics and for working condition. Make sure the video is time stamped (use a copy of the daily news or a receipt from a purchase that day). Take a separate video of the game all packed up with a vocal description of the packing job, if you had to pack/pallet it (IE no NAVL or white glove service)
-Try not to take PP for an item actually picked up by the buyer (not by a shipper). If you have to, make sure you get a signed receipt with a copy of their driver's license info, and tag #/vehicle description. Think about it... do you REALLY know who is picking up your game? A good solution here is to get a CC reader app for your phone/tablet... it costs nothing up front, and as long as you swipe the card, there is proof of a PHYSICAL transaction at your location (as long as location services are activated on your phone).
-on the receipt, make sure the terms of sale are spelled out in plain English (as is no warranty, 60 day warranty, etc.)
-Whether customer or shipper pickup... ALWAYS make sure you get some sort of receipt/proof of pickup, with printed representation from the buyer.
-make sure you legally state to the customer that they are responsible for any issues that occur during the shipping process. This can be done in an eBay description, or a return email.
Say what you want about all of this being OCD... I call it due diligence. PP is not regulated like a financial intermediary, and with access to your accounts, they can pretty much do what they want, when they want.