Philips Sonicare electric toothbrushes are some of the best personal oral hygiene products money can buy. Problem is, they run from just under $100 to over $200. Now you can cop one with subscriptions starting at $6 a month, which includes replacement brush heads mailed to you every three months. The question is whether or not you’re the type of person willing to pay for a toothbrush (granted, a grail toothbrush) in monthly installments.

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