Running Warehouse cuts an extra 15% off men's and women's liquidation shoes via coupon code "FB15D". It even stacks with sale items, which are already marked up to 53% off. With free shipping on all orders, that's tied with our mention from three weeks ago and puts many items at the lowest total prices we could find.
A best bet is the Asics Men's Gel-DS Sky Speed 2 Running Shoes in Royal/White/Black (pictured) for $49.88 before coupon, $42.40 after. With free shipping, that's the lowest total price we could find by $21. They're available in sizes 6 to 15.