Walmart discounts select pairs of CAP Barbell Rubber-Coated Hex Dumbbells in a variety of weight options, with prices starting at $8.90. Opt for in-store pickup to avoid the $5.99 shipping charge, or spend $35 or more to bag free shipping. (Select weights also bag extra discounts via in-store pickup.) A couple of best bets, both via pickup: 16-lb. Dumbbells (2 x 8-lb.) for $14.24 (low by $11) 20-lb. Dumbbells (2 x 10-lb.) for $17.80 (pictured, low by $11)