Onlyone Rechargeable Electric Toothbrush with 8 Brush Heads — $8.98

This Onlyone electric toothbrush bundles a sonic motor, five modes, and a smart timer with eight brush heads and a travel case — the kind of head stockpile that usually costs extra on its own. At $8.98, marked down from a $27.76 list price, it undercuts most rechargeable toothbrushes in this category by a wide margin.

It's a solid pick for anyone replacing a worn-out brush or outfitting a household without spending big, especially given the year of brush heads included. The listing is sold directly by Amazon with free 30-day returns, so there's no third-party seller risk, but the deal is tagged as a limited-time price with no stated end date, so it could disappear without warning.