Walmart offers the Garmin Vivofit Fitness Band in five colors (Black pictured), model no. 010-01225, for $79.99 with free shipping. (Best Buy and Amazon offer it for the same.) That's tied with our mention from two weeks ago as the lowest total price we've seen. (It's also tied with Bon-Ton's upcoming Black Friday deal and a current low by $15.) This activity tracker uses past behavior to recommend daily goals to improve fitness. It also functions as a sleep monitor.