There is always going to be a difference between the ebay approximation and the paypal actual amount.

Ebay is quoting the converted cost of the item only but when you pay through paypal you are paying the conversion rate PLUS the conversion fee that is charged by any money transfer service.

BTW ebay does not own paypal any longer....not since last year.

If you want to find out exactly what you will be paying there is a conversion table in paypal that will give you just the converted cost of the item as you can see on ebay and another table showing the cost that you will pay thrugh paypal which includes their conversion fees.