If you want to trust this auction, the blue unlocked (non-Verizon) is $339. Picture is 8S, but the description is for an 8X.
New HTC 8x C620E 16GB Unlocked GSM Phone Windows 8 OS 4 3" HD Display 8MP Camera | eBay
New HTC 8x C620E 16GB Unlocked GSM Phone Windows 8 OS 4 3" HD Display 8MP Camera | eBay