Walmart offers the Apple iPad Air 16GB WiFi Tablet in Silver/White, model no. MD788LL/B, or Space Gray/Black, model no. MD785LL/B, for $299 with free shipping. That's tied with our mention from two weeks ago and as the lowest total upfront price we've seen for a new unit. (It's a current best by $28, although most major retailers charge around $370 or more.)