If you purchase a single item with cash coupon / red packet, the cash coupon is not refundable when the goods are returned, and only
your actual payment amount is refunded;
If you have more than one commodity in the order of cash coupon / red envelope, the amount of cash coupon will be allocated to each
commodity in the proportion of commodity price. If the goods in the order are partly returned, the refund amount is the return
commodity price minus the corresponding cash coupon deduction amount.
Cash coupon refund calculation rule
If you order the amount of total goods (goods and their prices and do not calculate subtotal, freight) for X yuan, the use of cash
coupons for the amount of $Y
The discount rate is Y/X = D
The amount to be refunded for each commodity is its unit price P * (1-D)
In short, the amount of cash coupons you use will not be refunded to each commodity.
Illustrate
If you buy a price of 100 yuan of goods A, and the price of 50 yuan of goods B, using a 50 yuan cash coupon, the actual payment of 100
yuan.
When you need to return the goods to A individually, the amount of refund is
100* (1-50/150) =100*0.67= 67 yuan
When you need to return the goods to B individually, the amount of refund is
50* (1-50/150) =50*0.67= 33 yuan
Note: the above rules are not applicable to all kinds of promotional activities. The return policy of promotional activities is based
on the specific description of the activity page.