I don't buy. I don't buy.
I never bought such a machine.

You say "I want that one. That's conveninent
and absolutely necessary.
If you won't buy me, I would buy that one.
May I buy that one? Oh, please!"

You say "Now the whole world is run by machines."
What are you saying? No kidding!
My family doesn't have such a machine,
and your family doesn't, either.

This is a certain fact that it is great convenience.
Moreover it is up-to-date!
Do you know how much it is?
I'm sure it's quality is granted.
It's too expensive!