Full magazine subscriptions $3.99 at

Best Deal Magazines has 15% off most orders (excludes select titles) with coupon code PXSS118 [Exp 1/18]. 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 MNDSS118 [Exp 1/18]

$7.50 off $40 purchase with code MQQSS118 [Exp 1/18]

$10 off $50 purchase with code MQPSS118 [Exp 1/18]