This is 100 more expensive than that.
这个 比 那个 贵 一百 块。
Going by plane is faster but more expensive.
坐 飞机 快 可是 贵。
Was the cellphone that you’ve bought expensive?
你 买 的 手机 贵 不 贵？
That is expensive, this is slightly cheaper.
那个 很 贵，这个 便宜 一点。
This is too expensive.
这个 太 贵 了。
This is more expensive than that.
这个 比 那个 贵。