The Paypal fee's exist for a reason, and the service would certainly be of a lesser quality without them. Also, the fee's really aren't that excessive, when you consider everything that they are giving you for it.
PayPal fee's are at the right level I think due to what you are paying for and it takes a lot of hassle off the company. But, I would like to see improvments in PayPal disputes. But fee's are at he right level for the service that we get.
It's not the fees I'm having a problem with, it's their support that I'm scared of. If for some reason you fall out of their mercy they can take all your money without noticing you and shut you down so fast that your head will spin from rage!
Paypal is not expensive. I believe there is something much more important then just a fee for the transaction, FRAUD system is the most important thing. Because you can pay 3%-4% fees, but have 5-10 chargebacks +the fee for the chargeback (25-45$). So you will pay much more.......