Newegg offers the PQI MFi-Certified 1.3-Foot USB-to-Lightning Cable, model no. 6PCC-001R0002A, for $11.99. Coupon code "EMCYTZG253" cuts it to $7.99. With free shipping, that's the lowest price we've seen for an MFi-Certified cable compatible with iOS 7.1 (It's also the lowest total price we could find for such a cable by $6.)