DiscountMags offers a Popular Science Magazine 1-Year Subscription (6 issues) bundled with a Wired Magazine 1-Year Subscription (12 issues) for $24.99. Coupon code "DEALNEWS" cuts it to $7.99. That's tied with our April mention as the lowest price we've seen for this bundle. (It's also the best deal we could find today by $3.)
Of note, you can purchase up to a 3-year subscription at this discounted annual price.