Dick's Sporting Goods offers the Teva Women's Olowahu Sandals in Black for $14.97 with free shipping. (Teva Footwear via Amazon has them in Raspberry for the same.) Excluding the below mention, that's the lowest price we could find for any color by a buck. They're available in whole sizes from 6 to 10.

Don't mind going to the store? Cabela's offers them in Blue or Raspberry for $14.88 via in-store pickup.