Note, once you've received your email from Best Buy, click the yellow "Get Your Coupons" button, then location the 20% off personal care code.
Editor's Notes & Price Research
In-store availability may vary based on location.
Apply student coupon that was sent out today (I received at 11:12 CST) for 20% off the $59.99 price. Coupon is for 20% off personal care.
Only white color available, sold out online but many stores in my area had stock, good luck. Of course YMMV.
I also combined it with the paypal discount on ebay for $5 off a $50 gift card.
There is also a $5 rebate: https://www.waterpik.co
So my total cost is $50.67 after tax - $5 (ebay discount) - $5 rebate = $40.67
Amazon price: $108 (thanks NWMocha)