Update: Deal over.

Waterpik Cordless Advanced Water Flosser – Link

As a deal of the day, Amazon has this on sale for just $49.99 w/ free shipping.

This was selling for $79.99 yesterday and is now its lowest ever.

• First in category – Waterpik Water Flosser awarded the American Dental Association (ADA) Seal of Acceptance
• Healthier Gums and Brighter Teeth in Just a Minute a Day!
• New magnetic rapid-charge system, LED battery charge indicator, electronic pressure control, and 360 Degree Tip Rotation
• 4 Water Flossing Tips, 3 Pressure Settings, and 45 Seconds of Water Capacity
• Compatible With 100-240/VAC 50/60Hz voltage for global use