Hayu costs £4.99/month or $6.96/month for American users. It offers a 1-month free trial. that is charged £4.99/month after. So as long as you cancel the subscription before the month ends, it won’t charge you anything, and you’d use it for free.
In other countries, for example, Hayu costs $6.99 AUD per month in Australia, €5.99 per month in Ireland and $5.99 CAD in Canada.