Charge for order items

[art_by_tony]

I had an order which needed an $80 delivery charge, which I had to pay myself to send. Is there no way to separate that from the general fee I'm getting paid for the project? So now when I get paid, fiverr will be taking a cut of that $80 that I charged the client, but paid for myself out of pocket. That seems like an unfair business practice. The same with the second job I'm about to start. The client wants me to buy a specific sketch pad. Do I have to add more money to the sketchpad price just to cover what fiverr is going to take out of my payment?