Here ya go, http://www.midwayusa.com/find?sortby=1&itemsperpage=24&newcategorydimensionid=12705
Reloading would be the only way to go for any these cartridges. If you truly like the round then make the small investment and start reloading. I know I'll never part with my S&W 1066, heck it's my main ccw. I load it with 135gr Nosler's, 180 Hornday HAP, & just picked up some Barnes 155gr for some hunting loads. The idea of paying top dollar for full power 10mm loads is crazy when loading them yourself is so easy & much cheaper.
Nice, I looked a couple of years ago and could never find any dies for the .40 super. Looks like I may be picking up a new caliber now. I bet it will be a handful out of the G21.
http://www.lonewolfdist.com/Detail.aspx?PROD=1482