Amazon is my usual go-to market. The counterfeit problem, however, is why, when I needed replacement heads for my electric toothbrush, I considered buying a thi

Amazon is my usual go-to market. The counterfeit problem, however, is why, when I needed replacement heads for my electric toothbrush, I considered buying a third-party alternative as opposed to the toothbrush maker's own. I figured that there probably wouldn't be counterfeits for the third-party brushes, but I might very well receive fake first-party heads. (I ended up buying first-party heads, but not from Amazon.)