xiǎng zhīdào néng bu néng jiǎngjià, kěyǐ qīngqīng wèn: 'zhège jiàgé hái néng yōuhuì ma'

想知道能不能讲价，可以轻轻问：“这个价格还能优惠吗？

If you want to know if you can bargain, you can gently ask: 'Is there any discount on this price?'