GreenLife-Store2 via eBay offers this Toothbrush Head Refill 12-Pack for Oral-B
with free shipping
. At $0.83 per head, that's tied with our mention from a week ago as the lowest total price we've seen. (It's a current price low for this quantity by $7.) These refills are designed for use with the Oral-B Vitality, Advance Power, Pro-Health Battery, Professional Care, and Triumph electronic toothbrushes.