BalanceFrom Rubber Encased Hex Single Dumbbells: 70-Lbs $58, 100-Lbs $78 & More + Free Shipping

Walmart has single dumbbells for sale. 100lbs for $77.99, 90lbs for $71.99, 80lbs for $66.99, 70lbs for $57.99, 60lbs for $53.99.