Chinese phrase
买〜件可以便宜吗？ mǎi 〜 jiàn ké yǐ pián yi ma
Meaning
Could you lower the price if I buy ___ items?
When to use it
This asks if buying several items brings a lower price. It is a polite way to ask about a discount for a larger purchase.
Example dialogue
买 五 件可以便宜吗？ mǎi wǔ jiàn ké yǐ pián yi ma
Could you lower the price if I buy five items?
可以，五件我可以便宜十块。 ké yǐ wǔ jiàn wǒ ké yǐ pián yi shí kuài
Sure, I can make it ten yuan cheaper for five items.