Woot.com is selling this PowerBlock 50 lb Adjustable Dumbbell Set for $249.99 with free shipping for Prime members.

• Increments: 10, 15, 20, 25, 30, 35, 40, 45, 50 lbs. per hand
• Patented selector pin adjusts weight in seconds like a weight stack machine
• Space-saving design eliminates workout clutter
• Has a weight range of 10 to 50 lbs.