Dictionary / Vocabulary / 買い換える
かいかえる
to buy a replacement; to replace (with a new purchase)
Also written 買い替える、買いかえる、買換える、買替える
買い替えた方がお得ですよ。
You will be better off buying a new one than trying to fix it.
電子レンジの調子がおかしい。修理するより買い換えるほうがいいかな。
My microwave is acting up. I think I'd rather get a new one than repair this one.
もう電子レンジは買い換えてもいい頃です。
It is about time we bought a new microwave oven.