Best Buy has the DLA-x570r on sale for $1999. This is originally $4000 and usually on sale around $3500. This is a great price on an excellent 4k eshift HDR projector. This comes in at around 1800 lumens and is more catered to the full BatCave or Media Room setup.
You will need to go into a Best Buy that has a Magnolia theater and order it in store. This is not available for online purchase so it is somewhat YMMV however, anyone can order it in store. Your store does not need to have it currently in stock.