For its newsletter subscribers only, EverydaySource offers this Snap-On Case for Apple 13" MacBook Pro in Black for $32.99. Coupon code "S0309MRZF" drops it to $3.59. With $6.49 for shipping, that's 20 cents less than our mention from ten days ago and the lowest total price we could find by $2. This plastic case features cut-outs for ventilation.