250 - $27.50 $0.11 per item, includes $2.50 GST) 500 - $60.50 $0.12 per item, includes $5.50 GST) 750 - $75.90 $0.10 per item, includes $6.90 GST) 1000 - $93.50 $0.09 per item, includes $8.50 GST) 2500 - $203.50 $0.08 per item, includes $18.50 GST) 5000 - $346.50 $0.07 per item, includes $31.50 GST)