GravityBuys via eBay offers the factory-refurbished Apple iPad Air 32GB WiFi Tablet in Space Gray, model no. MD786LL/A, or White, model no. MD789LL/A, for $439.99. With free shipping, that's the lowest total price we could find for a refurb by $20. (It's also $69 below the lowest price we could find for a new one.) A 1-year Apple warranty applies.