Staples offers the Oral-B Shiny Clean Toothbrushes 12-Pack
, model no. OB-SHINYCLN12PK, for $8.99
. Plus, Staples Rewards members qualify for free shipping
. (Not a member? It's free to sign up
.) That's tied with last month's mention and the lowest total price we could find by a buck. They feature a tongue cleaner, z-shaped bristles, and a free hygiene cap. Deal ends June 2.