Full magazine subscriptions $3.99 at

Best Deal Magazines has 15% off most orders (excludes select titles) with coupon code PXSS28 [Exp 2/8]. Their cheapest magazines come from the "Free Magazines" category, effectively $3.99 each with 15% off coupon. Also check out TradePub for free technical publications.

$5 off $30 purchase with code MNDSS28 [Exp 2/8]

$7.50 off $40 purchase with code MQQSS28 [Exp 2/8]

$10 off $50 purchase with code MQPSS28 [Exp 2/8]