Is it illegal to pay for one of the captcha solvers? Ones like this are the easiest, captcha solves cost something like 4 cents each, and all you do is send the

Is it illegal to pay for one of the captcha solvers? Ones like this are the easiest, captcha solves cost something like 4 cents each, and all you do is send the image to an API, which responds with the solved captcha.