This is a The refund goods by jianhuagao.
Component details
The refund goods
One on one coach ...
membership card x1、personal training x10
Item value of goods：30000 | Commodity price：20000
quantity：x3
aggre：9000
amount：6000
total ：
-900
the amount actually paid：$1500.00
Total use value：733.33
unfold
membership card x1
(Have use value)
333.33
personal training x10
(Have use value)
400.00
The refund way
Refund to payer：
366.80