This is the one thing that is keeping me at my present diy yard, especially this year with the hay shortage. We get our own feed bedding etc in and are lucky enough to have storage for about 50 bales each when yard is full, but this year as we are low on horses we have managed to buy in enough hay to last till spring and store it. Down side is I have to shift and stack it all ! Some yards let you bring your own in but only have storage for about 10 bales each. I dont think its wrong for YOs to charge for acquiring, storing, paying etc. for feed and bedding as long as its not over the top.