DiscountVolume discount is given based on the basic monthly fee (sub total 1). The more test you purchase, the higher volume discount you may get.
 | | |  | | < USD$5.00 | - | | | >= USD$5.00 | 0% | | | >= USD$10.00 | 5% | | | >= USD$15.00 | 8% | | | >= USD$25.00 | 15% | | | >= USD$50.00 | 20% | | | >= USD$100.00 | 25% | |
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Contractual discount is given if you prepaid for a longer period.
 | | |  | | Monthly | - | | | Quarterly | - | | | Half-yearly | 5% | | | Yearly | 10% | |
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Multiple discounts will be applied concurrently if you fulfilled each condition. |