Walmart offers the Bowflex SelectTech 552 Adjustable Dumbbells, model no. 100182, for $279.99 with free shipping. (Amazon charges the same.) That's the lowest total price we could find by $19, although we saw them for $30 less last Black Friday weekend. This set includes 15 settings on each dumbbell with an adjustable dial system for weights of 5 to 52.5 lbs.