5 - $9.90 $1.98 per item, includes $0.90 GST) 10 - $9.90 $0.99 per item, includes $0.90 GST) 25 - $20.90 $0.84 per item, includes $1.90 GST) 50 - $38.50 $0.77 per item, includes $3.50 GST) 75 - $49.50 $0.66 per item, includes $4.50 GST) 100 - $64.90 $0.65 per item, includes $5.90 GST)