次の英文の添削をお願いします

質問

２つですが、おかしいところがあれば訂正してほしいです

１．定価で考えれば、これまでで一番高い買い物です。

Thought by value properly, that is highest value.

２．18から一人暮らししていますが、初めてソファーを買いました

I have been live alone since 18 age, that is first time for buying sofa.

回答No.1

yuaki28081 · ベストアンサー

これで意味が伝わりますが、
1. Price-wise, this is the most expensive thing I have ever bought.
2. I have been living alone since I was 18, but this is the first time that I have bought a sofa.
のほうが自然に感じます。

回答No.2

sporespore

This would be my highest ever shopping if this list price should be accepted.