I have used Paypal for 20 years and always had illusion that it would provide protection on buyers until now.
In Feb. 2016 I bought a faulty tablet PC from Everbuying.com via Paypal. I spend $231.30 on it. When I decided to return, their customer service told me to send it at USPS not using Express mail because express mail has higher possibility to cause Chinese tariff. I followed and used first class mail which doesn't provide tracking in China. I spent $33.75 of postage. 6 weeks passed, Everbuying kept saying not received it and refused to refund. I brought my case to Paypal resolution center and told Paypal that I saved all the communications with Everbuying into a file and had copies of USPS receipt and Customer Declaration form. Paypal has never given me opportunity to upload and submit my documents and ruled that I should mailed the item back (I did it 6 weeks ago?!) with tracking number in my own expense. Only after the company confirms receiving I am able to get refund. This totally absurd ruling shows Paypal is actually partner of Chinese cheating online sellers!