Woot has the Colgate 360 Advanced Whitening Electric Toothbrush – Pack of 4 on sale for $19.99 with free shipping for Amazon Prime or orders over $25.
Product Features:
- Battery powered toothbrush that uses 20,000 strokes per minute of sonic vibrations.
- Soft toothbrush spiral bristles and whitening cups.
- Provides 5X plaque reduction.
- Slim design and lightweight handle.
- Brush head is replaceable.