250 - $20.90 $0.08 per item, includes $1.90 GST) 500 - $38.50 $0.08 per item, includes $3.50 GST) 750 - $53.90 $0.07 per item, includes $4.90 GST) 1000 - $71.50 $0.07 per item, includes $6.50 GST) 2500 - $170.50 $0.07 per item, includes $15.50 GST) 5000 - $306.90 $0.06 per item, includes $27.90 GST)