Shoes.com takes up to 75% off sitewide during its Memorial Day Sale. Even better, take an extra 25% off select items via coupon code "MEMORIALDAY17". Plus, all orders receive free shipping. Some exclusions apply. A couple of best bets, with prices after coupon:
Academy Sports & Outdoors offers the Magellan Outdoors Men's Kace Casual Shoes for $16.99 with free shipping. That's $3 off list and the lowest price we could find. They come in select sizes from 8.5 to 11.
Sierra Trading Post offers the Keen Men's Versatrail Low Hiking Shoes in Midnight Navy/Warm Olive or Everglade/Jasmine Green for $49.99 plus $7.95 for shipping. That's tied with last week's mention and the lowest price we could find by $10. They're available in select sizes 7 to 8.5 11.5.