Amazon has the Rockport Total Motion Active Ghillie Men's Sneakers (Steel Grey) for $50 with free shipping. Made with leather upper, nylon shank, and EVA sole.

Amazon has the Skechers Gowalk 6-Stretch Fit Men's Slip-On Athletic Performance Walking Shoes (Navy/Orange, multiple sizes) for $45 with free shipping. Features lightweight Goga Mat that offers maximum support and cushioning.

Has excellent Amazon Reviews.

eBay has the adidas originals NMD_R1 V2 Men's Shoes (Cloud White / Cloud White / Core Black; Sizes 8 to 13) for $90 - 50% off with coupon 50COUPON (Ends 4/22) = $45 with free shipping.

Nike has the Nike Men's Flex Experience Run 12 Shoes (Black/Anthracite/Bronzine/Olive Aura) for $45. Shipping is free with Nike+ membership.

Nike has the Nike Men's Quest 5 Shoes (Smoke Grey/Volt/Black/White) for $51. Shipping is free with Nike+ membership.