What PearlDrums said, plus are you actually planning on shipping someone a frozen deer hide? How are you going to guarantee it will stay frozen in transit? Or are you willing to risk them receiving a stinky, rotting hide?
At the very least you need to thaw the hide, salt it and put it in something that won't let it dry out too much. Or you'll need to thaw out the hide and actually turn it into rawhide, which, as PD notes, is hours and hours of work if you want to do a good job. It will be much cheaper to ship finished rawhide than to ship a frozen green hide, or even a salted hide. The moisture in the hide and especially the hair weigh a lot.