Possible coupon mistake! JackRabbit is offering $20 off any single item with no minimum with coupon code Y8TRL521 in cart (free account required). Shipping is free - it says it costs when you select it but at final checkout there is no charge (even for Express!).
The site is extremely slow right now, but keep trying!
JackRabbit has the Nike LunarEpic Low Flyknit 2 Men's Running Shoe (Black/White or Blue/Blue) for $140 - $15 off with coupon code EPIC50OFF - $55 off in cart = $70 with free shipping. Available in sizes 8.5 through 13.