Sam's Club offers its members the Innovative Technology 5-watt Wireless Bluetooth Outdoor Rock Speaker 2-Pack in Grey or Tan for $69.88 plus around $7.51 for shipping. (Non-members pay an additional $6.99. Sam's Club Plus members receive free shipping.) That's the lowest price we could find by $3, although most stores charge around $90. They feature a 33-foot range and 10-hour rechargeable batteries. Deal ends May 21.