Nike Store has the Nike Revolution 8 Men's Road Running Shoes (Green Shock) for $75 - 25% off with coupon code ACCESS at checkout = $40 with free shipping on $50 with Nike membership (free to join). These shoes have a a foam midsole and a flexible forefoot. 

Also check out these deals (price is shown w/ code ACCESS):

• Nike Zoom Rival Fly 4 Men's Road Racing Shoes for $59 
• Nike Free Run 5.0 Men's Road Running Shoes for $57