I want to say,
I bought this book for 1200 yen.
My attempt is as follows but I am not sure whether it is correct or not.
私はこの本を1200円買いました。
私はこの本を1200円で買いました。
I want to say,
I bought this book for 1200 yen.
My attempt is as follows but I am not sure whether it is correct or not.
私はこの本を1200円買いました。
私はこの本を1200円で買いました。
The latter is correct. The former is grammatically wrong as it roughly translates to "I bought this book 1200 yen" (lacking 'for', as denoted by で).