PacSun offers the Mia Women's Strappy Cruise Sandals in Silver or Gold (pictured) for $29.95. Add two pairs to your cart, and the price drops to $39.50. With free shipping, that's $20 off list price, $19.75 per pair, and the lowest total price we could find. They're available in most sizes from 6 to 10, although not in all size/color combinations.

Update: The price has increased to $39.90 for two pairs.