For the best deal on a new membership at Slutty Stepsister you will want to take advantage of our latest discount. If you subscribe via this offer, the cost of a monthly membership is reduced from $24.95 to just $14.95. That is a monthly savings of $10.00 off the regular price. To pay even less than $14.95 per month, select the 1-year plan. This extended plan is just $60.00 initially and is equivalent to paying just $5.00 per month. At this low price, you save a staggering 80% off.