děng nǐ huí lái shí kě yǐ shuō wǒ gāng cái wèn guò nín shuō zhè gè jià hái suàn ma

等你回来时，可以说：“我刚才问过，您说这个价还算吗？

When you come back, you can say: "I just asked, did you say this price is still valid?"