So I'm about due for a new KME size XC or XXC stone, and while I have no problem buying direct from KME (they have been pretty good to me on replacing a stone with a big clump on it for free), they want $25 + shipping for 1. You can readily get a medium Dia-sharp by DMT for $15, and I believe that KME gets their stone from DMT, but I don't see where you can get the real coarse stones online (Amazon, DMT, anywhere?). Any ideas on getting a 1 inch wide 4 inch long & 3/16 thick real coarse diamond stone for something like 15-20 bucks?