250 - $38.50 $0.15 per item, includes $3.50 GST) 500 - $75.90 $0.15 per item, includes $6.90 GST) 750 - $97.90 $0.13 per item, includes $8.90 GST) 1000 - $119.90 $0.12 per item, includes $10.90 GST) 2500 - $236.50 $0.09 per item, includes $21.50 GST) 5000 - $350.90 $0.07 per item, includes $31.90 GST)