50 - $49.50 $0.99 per item, includes $4.50 GST) 100 - $82.50 $0.83 per item, includes $7.50 GST) 250 - $181.50 $0.73 per item, includes $16.50 GST) 500 - $280.50 $0.56 per item, includes $25.50 GST) 750 - $423.50 $0.56 per item, includes $38.50 GST) 1000 - $559.90 $0.56 per item, includes $50.90 GST)