There's a new promo code out at Chapters.Indigo.ca this week for iRewards and Plum members. For the next few days, you can take 10% off your next online book purchase.

To get the discount, enter promo code MarchDoubleDiscount at checkout. The code is valid online only, until 3AM EST on March 30.

As usual, this coupon can't be used towards gift cards, smartbox gift cards, Rosetta Stone, iRewards memberships, electronics, eBooks, used book, or donations. There's a limit of one coupon per transaction.

If you aren't a member, you can sign up for a Plum Rewards membership for free. Plum members earn points for in store purchases, which can then be redeemed for savings. The iRewards program has a $35 annual fee, and members get extra discounts in-store, including 40% of bestsellers, 10% off books and up to 5% off books online.