Tenshigao allows you to preview the entire Members Area of the site absolutely free. You get to see every video that is available once you join. Membership is available from $15 per month (for 6 months membership) and your account is automatically renewed each month until you decide to cancel your membership. There is also a shorter full-access trial membership with exactly the same features as the monthly option for less and it automatically recurs as a monthly membership for your convenience once the trial period expires. If you prefer not to be rebilled, you can easily cancel your membership.