This looks cheapest out there though from retailer (eglobalcentral) with very bad user reviews. Also available direct from their webportal Moto X Force £177.99
IMO much better specs than G4/G5 for slightly more ££ and worth taking a punt with ebay + paypal's buyer protection.
Limited stock. Current stock level = 9
5.4" AMOLED QHD display with shattershield technology
3760mAH batteryMoto X force review - techradar