nekomata_saren@tg says to YSITD 例子1: A: $500 B: $999 A不叫價 ->A虧蝕$500，B用$999得標賺$1 例子2: A: $500 B: $990 A: $1500 B: $2500 ->A虧蝕$1500，B用$2500得標虧蝕$1500