New price low! Amazon has the Nebula by Anker Mars II Pro 500 ANSI lumens 720p Portable DLP Projector, 2019 model (AK-D2323111) on sale for $470 - $100 off coupon (click checkbox) - $50 off with coupon code NEBMS2PRO in cart = $320 with free shipping. 

• Max 3 Hour playtime via battery (ECO mode), up to 100" projection size, Android 7.1