Is there any discount on this laptop?

这个笔记本还能便宜点儿吗？

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今天的几个句子是有关买电脑的：

1. It's already very cheap. 已经够便宜的了。

2. Alright, I'll buy this one.好吧，我就要这个。

3. Can I pay using a credit card? 我可以刷卡吗？