Bidallies via eBay offers the refurbished Unlocked Apple iPhone X 256GB 4G LTE Smartphone in Space Gray for $639.99 with free shipping. That's $10 under our February mention and the lowest price we could find for a refurb today by $6, although we saw it for $50 less in December. Note: No clear warranty information is provided. Also, it will not work with Verizon or Sprint.