Groupon offers the refurbished Unlocked Apple iPhone 6 Plus 128GB Smartphone for GSM Networks in Space Gray, Silver, or Gold for $829.99 with free shipping. That's $30 under our May mention and the lowest total price we could find by $119.

Of note, it's also available in 64GB for $759.99 with free shipping. That's another price low, this time by $89. Both deals end August 12.

Update: Description corrected.