After deal with many clients who ask me to source or verify suppliers.

I found such a things, that is the paypal cost to much for payment, I do not know how much it cost at overseas, anyway, the fee here in china cost really very high. and this fee will be for buyers, as I see this paypal fee in the invoice when my client want me to follow up his order. so I found there is a paypay fee in the invoice to be paid by buyer. 

In my opinion, buyers think that it is protective for them although it cost a little. But why not add a little more for send an agent to verify them a become an long-term supplier, and you can know how the supplier's actual ability, to consider a future business, I think this would be a best choice when you are doing business.

What do you think?  what's your idea?