A couple of years ago I purchased a Chanel bag that turned out to be an obvious fake. The seller printed the shipping label, then took over three weeks to take the bag to the post office. She kept telling me she'd sent it, giving me the tracking info and the PO kept saying they never received it. I filed an "item not received" claim with eBay on the last day a claim could be filed, only to have the bag show up while the dispute was in progress. I tried to modify the claim to indicate that the item was SNAD, but was told on the telephone that once a claim has been filed for one reason (not received) that I could not change the claim or file a second claim. The man from eBay told me it was a glitch in the system and referred me to Paypal. I filed the claim at Paypal, but was charged a $35.00 processing fee. I got my money back, but had spent over $20.00 shipping both to and from, plus lost the $35.00 processing charges. I emailed the seller and let her know that I was going to file a claim in small claims court (in my state) for the $75.00 difference. I told her she had the option of paying me the $75.00 directly and if she didn't that in court she'd be liable for 3 times the $75.00, which is the law in my state. Amazingly, she sent me a Paypal payment for the $75.00. Never once did eBay or Paypal offer to do anything other than get my Purchase price for the item, less the $35.00 processing fee.
Don't expect eBay or Paypal to protect you in any way, take the actions necessary to protect yourself.