Best Buy offers qualifying students the Waterpik Ultra Water Flosser in Black, model no. WP-112, for $28.59 with free shipping via the directions below. That's $16 under our August mention and the the lowest total price we've seen. (It's a current low by $19.) It features 10 settings, 90-oz. reservoir, and six water flosser tips. To get this deal:
  1. View the Waterpik Ultra Water Flosser for $47.99
  2. qualifying college students can register here for a unique 30% off personal care item coupon to drop it to $33.59
  3. redeem this $5 mail-in rebate to yield a final total of $28.59