Please create a test case to verify that the use conditions of the Coupon are correct User can use the following payment method when purchasing items on Mercari Coupon Credits Balance Card (paypal) The order of priority is Coupon>Credits>Balance>Card(PayPal) All of the payment method can be applied to multiple User can choose whether to apply Balance or not, but Coupon and Credits must be used automatically User can not purchase items using only Coupon User can purchase items using only Credits,only Balance,or only Card (PayPal) We will distribute Coupons to users and the conditions are as follows Condition 1: 10% discount from item price Condition 2: User can use only for items of $10 or more Condition 3: The maximum amount discounted is up to $10 Note: Item price can not be $10.10 ($10 after $11). Note: If the user has Credits $9 and Balance $3, if the user tries to purchase a $10 item, $1 will be discounted at Coupon and $9 will be purchased using Credits and there is no possibility to use Balance or to use Card.