US $4.85 /500 pc US $5.39 /500 pc
US $2.65 /5 pc US $2.79 /5 pc
US $3.60 /10 pc US $3.79 /10 pc
US $4.22 /10 pc US $4.69 /10 pc
US $3.22 /10 pc US $3.39 /10 pc
US $3.51 /100 pc US $3.69 /100 pc
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Each customer has only one opportunity.