Virtual Exchanges via eBay offers the Billabong Women's Beach Dunes Sandals in Black/White or Cognac for $14.99 with free shipping. That's the lowest total price we could find by $9. They're available in sizes 6 to 9.
REI offers the Born Men's Chad 2-Eye Oxford Shoes in Bath/Green or Grey/Deep Grey for $54.83 with free shipping. That's the lowest total price we could find by $24, although we saw them for $14 less in September. They're available in most sizes from 8 to 14, although not in all sizes/colors.