Why this hasn't become industry standard practice both baffles and bugs me. I've been voting with my wallet by doing most of my disc ordering with discgolfcenter.
Time and money. Takes the retailers a lot longer to take a picture and ID each individual one. DGC has bumped their prices up a dollar or on most discs that have pics but it's not enough to sway me away from buying from them. especially since I've hit the max discount from my years of buying from them.