I don't agree that Paypal is a necessary on Ether at all. Firstly there are other options as some have mentioned eg: moneybookers etc... But I don't see what is to be gained by paying a percentage to Paypal for the use of their service when Ether provides payment options of their own.. this is my opinion and I hope that there are more options and definately paypal is not compulsory - I personally also do not like paypal for the reason that they will do chargebacks easy enough and this would be a definate concern when charging for phone services that can and may be charged back .. how to deal with that I do not know
thx