5 - $5.50 $1.10 per item, includes $0.50 GST) 10 - $5.50 $0.55 per item, includes $0.50 GST) 25 - $16.50 $0.66 per item, includes $1.50 GST) 50 - $31.90 $0.64 per item, includes $2.90 GST) 75 - $42.90 $0.57 per item, includes $3.90 GST) 100 - $60.50 $0.61 per item, includes $5.50 GST)