YouBuyRite via eBay offers the refurbished Unlocked Apple iPhone 7 128GB Smartphone in Jet Black for $549.99 with free shipping. That's $15 under our mention from last month and the lowest price we've seen for it unlocked in any condition. (It's also $199 less than buying it new.)

Note: No warranty information is available, although the seller does have a 30-day return policy.