5 - $5.50 $1.10 per item, includes $0.50 GST) 10 - $16.50 $1.65 per item, includes $1.50 GST) 25 - $38.50 $1.54 per item, includes $3.50 GST) 50 - $71.50 $1.43 per item, includes $6.50 GST) 75 - $108.90 $1.45 per item, includes $9.90 GST) 100 - $141.90 $1.42 per item, includes $12.90 GST)