You need to state in your auction listing that import fees maybe payable and it is the buyers liability. Make sure this is visible to avoid any complaints.
If you get a negative feedback there is not a lot you can do, try contacting eBay and see what they do.
If you only accept PayPal then buyers can pay with their credit card, debit card or PayPal balance. It then goes straight into your PayPal account and takes around 5 days to clear.