You may not be able to do it from your European account, but in the UK we on the first payment page where you enter the email address and amount there is a box below that to say what the payment is for. It defaults to "Goods" but if you click the Personal tab in there you can send it as a "Gift" which does sometimes charge fees depending on where the funds come from (i.e. paypal balance or bank etc.) and the "Personal Payment Owed" which doesn't charge any fees to either party. Only things to be aware of is there is NO protection offered from PayPal if the person you send the money to doesn't fulfil their obligation in any deal.