Full magazine subscriptions $3.99 at

Best Deal Magazines has 15% off most orders (excludes select titles) with coupon code PXSS1019 [Exp 10/19]. 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 MNDSS1019 [Exp 10/19]

$7.50 off $40 purchase with code MQQSS1019 [Exp 10/19]

$10 off $50 purchase with code MQPSS1019 [Exp 10/19]