TIWCGJQPayPalCartProduct.DiscountRate Property
Discount rate (percentage) associated with an item. It must be set to a value less than 100. If you do not set discount_rate2, the value in discount_rate applies only to the first item regardless of the quantity of items purchased.
published property DiscountRate: Double index 09 read GetDoubleValue write SetDoubleValue stored IsDoubleStored;
Property Value
Type: Double