Walmart offers the Mongoose Men's 26" Ledge 2.1 Mountain Bike in Black/Red or Blue/Green, model no. R4050WMBDB, for $115 with free shipping. That's tied with our mention from Black Friday week, and the lowest total price we've seen for this bike. (It's a current low by $49.) It features an aluminum suspension frame, linear pull brakes, and Shimano rear derailleur.
Need it for Christmas? Upgrade to standard shipping for $4.97 and place your order by December 19 for guaranteed delivery in time.