I've had Delcampe Pay for a few months and what has been said above is correct for smaller amounts. For larger amounts it swings the other way from a couple of sales I've had:
Sale £33 - Paypal fee £1.52, Delcampe Pay £1.31
Larger sales attract a lower fee on Delcampe Pay, but it obviously depends what level of sales individual sellers have, whether it is better for them or not + as it's only available in Europe so you still need PayPal anyway!
I still do not understand why Delcampe stopped using Skrill when they introduced Delcampe Pay . Why could they have not still kept Skrill as an option? Yes, fees were high and usage was low for Skrill, but for customers from countries that do not have PayPal (like Pakistan) it was still useful & generated some decent sales. I could have understood it if Delcampe Pay was available to those countries, but it isn't!