These Bowflex SelectTech 552 Adjustable Weight Dumbbells, listed at $549, are now $279.99 at Walmart.com. Plus, shipping is free. This equals the best price we could find anywhere (see Amazon as well), and most merchants are charging closer to $349 (including the manufacturer!). These weights replace 15 pairs of dumbbells, as they are adjustable from 5 to 52.5 pounds in 2.5 pound increments, and they have a 4.8-star rating on 384 reviews thus far (and a 4.7 on 2,899 reviews on Amazon). Sales tax is charged in most states.