Ok,thanks all.

Sorry,should have checked back here before refunding and sending a combined invoice as I checked for previous posts and that seemed to be the way to do it.

I thought if I did it quickly they would get the messages and still be able to pay or reply.

Will have to remember about C & S allowing you to combine as then it doesn't matter if they pay separately. 

Didn't click that sending separately was cheaper as well.

Can't send now as I have no Paypal address.

Hopefully the buyer is understanding and that they get the refund message.

They paid separately and I didn't check the Paypal details as they could have wanted them to different addresses.

Looks like I might have to write up a checklist of actions I can/need to take for future reference.

The registered part is to cover me in case of a Paypal dispute.

I only buy the Boney books to read and then sell them so any money I get for them is a bonus.

Looks like I still have lots to learn.