I just got this projector from Amazon, paid 425 plus tax. Luckily I'm within the return window!
It's an awesome device, the brightness is good enough for low light use, the built in speaker is decent, the focus and keystone correction work well.
The only complaint I have is that getting audio from the device to a home stereo is doable with Chromecast, but the delay was significant. That means I have to buy a Bluetooth receiver.
Rev_REBI saw that it said it could be used as a hotspot and thought that send weird if it was WiFi, but it must be carrier unlocked. So if you want to add a sim you can.