Wilco is running their semi annual DeWalt sale and I picked up the DeWalt 1800W Portable Power Station for $299. This is $200 off retail with free pickup and matches Amazon's lowest-ever price and everything new and used currently on eBay.
If you're a DeWalt 20v nerd like myself, plug in your 4 highest-capacity batteries and BOOM! 120V to run 1800 watts of whatever you need in total silence. Be aware that your total output will be capped by your smallest aH pack and it is a modified sine-wave output better suited to tools than electronics.
YMMV with ship to home
-- Wilco is a co-op in the Pacific Northwest, and this is a "member only price" (yes, I am a member) but no proof of membership is required for online checkout. I believe in the past some SD'ers from out-of-area have had their Ship orders cancelled.
: as of 6/16 still showing "10" in stock at my local store, which is 1 fewer than when I did store pickup. I am guessing that Ship To Home inventory is gone, and this should be considered in-store pickup only based on the cancellations noted by commenters.
(Be kind, first SD post.)