Is there an appeal process after PayPal has decided a dispute?

Description

I had the same problem with London Meichi. In my case it was a $49.95 purchase which never arrived. To return it would cose $23.50. I then applied to PayPal for free return shipping which they approved. I paid the $23.50 up After proof of return I was reimbursed the $23.50. I still have not been reimbursed the $49.50. Got my fingers crossed and hope they find in my favor.