5 - $9.90 $1.98 per item, includes $0.90 GST) 10 - $16.50 $1.65 per item, includes $1.50 GST) 25 - $38.50 $1.54 per item, includes $3.50 GST) 50 - $75.90 $1.52 per item, includes $6.90 GST) 75 - $119.90 $1.60 per item, includes $10.90 GST) 100 - $159.50 $1.60 per item, includes $14.50 GST)