If you are shipping on eBay via USPS, if you choose Priority Mail, you get up to $100 free insurance through USPS. If you want to get more, feel free to, but I think this would be sufficient for insurance for me personally.
Signature Confirmation is a nice tool that really only helps with two things: Scammers saying they didn't receive the package and to prevent the ever mystical "Porch Thieves", since if no one is home to sign for the package, they will either attempt redelivery the next couple of days, or just leave a note saying their package is ready for pick up at their local PO.
As for tracking, if you use Priority Mail, you will get free delivery confirmation (DC) / USPS Tracking, which tracks it every step of the way (ideally...).
Just don't cheap out and pick Parcel Select, pay for the Priority Mail instead (not the Express option, that's expensive), as the less time the console is out in the wild, the better.