Amazon offers preorders of ZAGGkeys Folio Keyboard Case for iPad Air in Black, model no. ZKFHFBKLIT105, for $79.99 with free shipping. That's the lowest total price we could find by a buck. It features a Bluetooth keyboard which purportedly has 30% more typing space than similar cases, backlit keys, and three months of use on one charge.
Walmart offers the ZAGGkeys MINI 9 Case/Keyboard for Apple iPad mini in Black, model no. FOLBSLBLK103, for $25. Shipping adds $4.97, or choose free Site-to-Store. That's the lowest total price we could find by $60. It features built-in stand, textured shell, and island-style keys.