From my experience, not so good. That said in your case the seller has a tracking number and you haven't received goods. In my case I'd received faulty goods, posted them back as requested, then nothing. Since I'd not been informed of a tracking number and so had none, that was the feeble excuse eBay used to fob me off and rule in favour of the Hong Kong crook.
My advice is not to trust eBay nor PayPal to protect you, and definitely not to buy expensive items from Hong Hong.