small abrasive: your canon + lvl10 workshop (500 ram + 250 cata, average 26k upkeep)
great abrasive: your hammer + lvl10 workshop (1000 ram + 500 cata, 72k upkeep)
WWK: at least 110k army, inside 8,5k cata. It can buid in main village, artifact only need in great WWK army ( from near 200k, 10+k cata).
Without gold, the small abrasive can reach that time, when others have great abrasives.