forced to use paypal
Its not suprising they are making more money from paypal as you are pretty much forced to use paypal when you list something on ebay, If you put in your listing that you even offer rival payment services such as google checkout as a way to pay your listing will get flagged.
If you try selling low value items (£2 or under) by the time you have taken in ebays listing fee, final value fee and paypal fees there is hardly anything left in profit.
I've tried listing on rival services such as ebid but there just arent enough people using them at the moment to make any decent money from sale on there. It needs a Microsoft, Apple or Google with deep pocket to buy one of the rival services and spend money on marketing to get more people visiting them