With invoicing? I didn't see that last week or there abouts.
close to, you add the info into paypal, and what the seller (in this case you) should recieve this will have paypal do all the calculations for you, then ur sure to get the right info on the invoice.This would be epic nothing is more annoying then having to calculate paypal fees in an invoice.
if then the one sending money does the same we golden :)
also the program we use at my work has this inplemented, in the invoice part of it. but sadly this is a norwegian program, so donno how much help that would be to you :P and dont really use paypal much in my company so isnt really to helpfull to me either :P