Buy one pair of men's or women's Nike slides at DicksSportingGoods.com and get a second pair for 50% off. With free shipping, most are at the lowest total price. Check out the Nike Men's Rejuven8 Slide 3 Slide in Black/White, already reduced from $30 to $19.97. Buy two and the price drops to $29.95. With free shipping, that's around $15 per par and $20 under the second lowest total price out there for two pairs. Sales tax is charged in most states.