Empty Box 1 unit = RM1 BUY 6 FREE 1*买6送1 BUY 12 FREE 3*买12送3 BUY 24 FREE 7*买24送7 BUY 36 FREE 11*买36送11 BUY 48 FREE 15*买48送15 ... BUY 100 FREE 50*买100送50 BUY 150 FREE 100*买150送100