at least
as much as


Usually, quantifiers do not have particles attached to them.

あそこに 女の子が 二人 います。
コーヒーを 三ばい ください。

But when you are talking about how much things cost, you want to be able to say things like “at least”.

A: 大学で 勉強するのに、どの ぐらい かかりますか。
B: そうですね、2万7千ポンドは かかります。
A: えっ??2万7千ポンドも  かかるんですか!

A: How much does it cost to study at university?
B: Well, it will cost you 27,000 pounds at least.
A: What? It costs as much as 27,000 pounds?