Recent experience of mine. Sold a sealed Series 10 box. Buyer lets it sit at their post office waiting for signature for ~20 days. Files eBay claim. eBay denies their claim, since when tracked, the package is clearly waiting at the post office for them. After their eBay claim is denied, they go pickup the package from post office. Buyer now has their box of Series 10.
3 months pass, they now file a chargeback with their credit card company. Claiming "not as described". Paypal removes the funds from my account. Paypal takes my full account of what is happening, it's clearly a chargeback scam, but all Paypal does is file a counter dispute on my behalf. It's been about 2 months since and I haven't heard a thing. At this point I assume I'll have to eat the loss.
For those who want to block this buyer, their account name is "igotwired". It's a company named Pacific Pillows LLC.
Just sharing my experience.