Walmart offers the Roadmaster Men's Granite Peak 26" Mountain Bike in Black, model no. R4046WMD, for $68.48 with free shipping. That's $11 under our January mention the lowest total price we've seen. (It's a current low by by $36.) This 18-speed bike features a steel frame, front and rear linear pull brakes, Shimano rear derailleur, and suspension fork.