I honestly think it depends on the individuals involved, and their dynamic. If a feedee is also into, say, financial domination, then that's one thing. But that should always be something that is discussed between the individuals, just like any other fetish should have the people involved discussing the 'rules' and such beforehand.

That being said, I'm a feedee, and I have no problem buying my snacks to put shows on for people. If I'm offered a PayPal transfer to buy Oreos or a sack full of cheeseburgers, will I turn it down? No. But will I ever outright ask for it, or even hint that I want it? No. Because that's not the kind of gal I am. In fact, I hate those people who blatantly hint that they want something. Like 'oh man, I really wish I could get this thing. This thing would be so awesome to have. It would be really great if I had this thing. SIGH.' Like... go away. Go far, far away, preferably forever.