Pay in the seller's currency - set as default in PayPal / EBay

Steps to set you use conversion rates from you bank by default instead conversion rates from paypal (paypal adds 2.5% commission):

1. Log into paypal.com
2. Click on profile link. It is locates in top right corner of paypal page.
3. Click on "Profile and settings" link
4. Click on "My money" menu item
5. Look for section named "Automatic payments". There is a link named "Manage automatic payments"
6. You are redirected to page named "My preapproved payments". Look for a link named "Set Available Funding Sources" 
7. You will see all your registered credit / debit cards. Next to each of them, there is a link named "Conversion Options". Click all of them (or only ones you want to use your bank convertion rates insted of paypal's)
8. Select "Bill me in the currency listed on the seller's invoice." and push button Submit.
9. Repeat steps 7. and 8. for every card you want.