i have to say that i totally agree with itzenterprises on this one.   I know the exchange rate fluctuates - thats why the ebay listing includes the word "approximate". But they could add their 4% to the listing price and still use the word approximate...

Please, read carefully the answers above; eBay does not know how much the $ will be at the moment you pay, they have no idea when you will pay, and they have no idea what your bank will charge if you use CC.  So how on earth do you expect tem to tell you the total before it is processed?