Best Buy Back to School Sale offers Philip Sonicare’s 4100 electric toothbrush down at $36, more dorm-ready deals from $80

As part of Best Buy’s Back to School Sale, you can find a bunch of solid savings on dorm room and apartment-ready devices, like the Philips Sonicare 4100 Electric Toothbrush at $35.99 shipped, matching in price over at Amazon. Normally $40, but fetching as much as $50, this is a very popular model to upgrade your oral hygiene routine with, which has been discounted as low as $32 in 2026. The 28% markdown here cuts $14 off the tag for the third-lowest price we have tracked behind falls to $34 in