OhVertigo 2022-06-01T11:37:56+00:00 别人送了一个k40s,没给发票,但是我不想要k40的瞎眼oled,想换k50 2k e4或者note11t pro的lcd,但是没发票小米之家能退货么?还是只能走咸鱼了,k40s 8+128g,黑色全新未拆,多少钱出掉比较合适?