BuyDig via eBay offers the refurbished 4th-generation Apple iPad with Retina Display 16GB WiFi + 4G for AT&T in White, model no. MD519LL/A, for $289.99 with free shipping. That's the lowest total price we've seen for this model, and $9 less then the best price we could find for a new one. Deal ends September 13.
A 90-day warranty applies, but it's not clear who backs it.