Apple has teamed up with eBay (again) to offer unlocked certified refurb iPhone models, all priced between US $449 and $499, as first noted by AppleInsider. The store front currently offers several iPhone models.
Apple Certified Ebay Store Front
There's no obvious Apple ties in the eBay storefront, but it bears a strong resemblance to the last time Apple created an eBay outlet, which was for selling refurbished iPads. Each iPhone comes with a full one-year warranty, and they are listed as "exclusive" to the eBay Factory store.
AppleInsider mentioned that the previous trial was a three month pilot program and Apple didn't renew at the time.