Oral-B Pro-Health Precision Clean Battery Toothbrush – Link 
This was selling for $11.64 earlier and has currently dropped to a record low of just $4.99!
Note that this is an Add-on Item which only ships with a minimum $25 Amazon order.
- Improved technology delivers more consistent battery performance.
- Soft, rubberized ergonomic handle.
- Can be used with: Precision Clean, Floss Action, Deep Sweep, Dual Clean, Pro-White, Sensitive Gum Care, Interproximal, and Ortho refill heads.
- Significantly improves gum health.