This is a perfect comment, as already stated.

As an artist who actually has read the TOS I know that it is my responsibility to pay the fees, and there for do NOT change my prices to include the fee amount because I feel that is unfair to my commissioners. Now I would not say no to a commissioner paying the fee for me, but I don't expect it. It's more like a little personal treat when they do, like a b-day present, and I actually prefer that people don't regularly do it because of this aspect. n.n