Meritline offers the Philips PowerLife 9V Alkaline Battery 6-Pack, model no. 6LR61P1B/27, for $9.99. (You'll see it listed under "Buy More Save More".) Coupon code "MLCD10VN" cuts them to $7.99. With free shipping, that's the lowest total price we could find for this quantity of comparable name-brand batteries by $9.