Staples offers the Duracell Quantum Alkaline AA Battery 24-Pack, model no. QU1500BKD, for $8.99. Plus, Staples Rewards members receive free shipping. (Not a member? It's free to sign up.) That's 37 cents per battery and the lowest total price we could find by $10. (For further comparison, we saw a 48-pack for $16 last spring.) Deal ends March 31.