Shoes.com has a promotion that can save you $40 on a purchase of $99 or more before taxes. To get the discount you need to use Visa Checkout and promo code EMLVISA17. Looks like the code can be used multiple times.
You can also use code EMLVISA2017 for a discount of $50 on purchases of $125 or more.
You can also get another 12% cash back through TopCashBack.