The Reinast toothbrush is $4,200. It's made of solid titanium. Included in the price is three years of bristle replacements, but after that you'll need to opt-in to one of the replacement plans, which start at $400 for five years' worth of bristles. The Reinast toothbrush isn't just a toothbrush; it's a statement. You won't get out of bed for less than a million, and your plaque and swamp mouth won't scrub off for anything less than what most people use as a down payment on a new car.
This thing is for monsters, really vile human trash heaps. The kind of people you imagine sitting in on an Illuminati-style board meeting deciding the fate of the world. There's a Middle Eastern sheik, a Texas oil tycoon in a cowboy hat, and a pile of money with eyes and a menacing laugh. They all use the Reinast toothbrush to cleanse their mouths of the poor people they eat for lunch before deciding which world leader to assassinate.
There is no reason relating to function that explains the $4,200 price tag. Seriously, it's been tested:
It's all a matter of opulence and how much of an asshole you want your teeth to perceive you as. It's not even electric. It's a $4,200 stick for your mouth that serves the same purpose as the toothbrushes the worst neighbor on the block gives out for Halloween every year. It's the kind of product that would get a special mention in a lottery winner's suicide note after they'd spent themselves into financial ruin.