Walmart offers the refurbished Unlocked Apple iPhone 6 64GB GSM Smartphone in Space Gray for $155 with free shipping. (Shophotdeals1 via eBay charges the same.) That's tied with our mention last month as the best price we've seen for this phone. (Outside of other eBay sellers, it's the lowest price for a refurb now by $14.)

Note: A 90-day warranty applies, but it's unclear who backs it.