If you are looking for flagship Windows 10 Mobile at a cheap price then you are in good luck, An online retailer in Amazon is selling unlocked Alcatel Idol 4S for just $400. The device is really well built with decent camera and VR experience. For such price this deal is a steal. However you want more cheaper then T-Mobile is selling the phone for only $288 but you have to choose a plan from them.
VIA – WindowsCentral