Another way is you can probably just join 2 seperate breaker outlets which are 120V. Now you should consult with an electrian first before you do this because I don't know if its going to be up to code and everything. So do this under your own risk.
Depending on the jurisdiction you would have to do more than "consult" an electrician.
You nay be required to have an electrician either do the work or certify it.
But yes 240V is just using the +120 and -120 (red & black) with heavier gauge wiring and a
bigger dual pole breaker. That's how the stove and dryer do it.
That's a lot of capital overhead for a product with a limited lifecycle.