eBay with Crocs has the Crocs Adult Baya II Slide Sandals (3 colors, but most sizes in Black) on sale for $18 - 20% off with coupon code BRANDS4YOU [Exp 5/10] = $14 with free shipping.

• Note: If buying multiple pairs, there's a stacking 15% off $65 promo. 4 pairs of the above style would drop to $12 each.