Mobilepros1 via eBay offers the refurbished Unlocked Apple iPhone 5s 16GB Smartphone for GSM Networks in Silver or Space Gray for $158.99 with free shipping. That's tied with last week's mention as the second-best price we've seen for an unlocked iPhone 5s 16GB smartphone. (It's currently $131 under the lowest total price we could find for a new one.)

Note: No warranty information is provided.