eBay with OUPES-Official has the refurbished OUPES Mega 3 3600W 3072Wh Solar Generator for $1599 - 20% off with coupon code MEMORIALTWENTY [Exp 5/27] = $1279 with free shipping. 5 AC Outlets, LiFePO4 Battery. Roughly 42 cents per Wh. 

• Seller notes: Like-new, 99% battery health, 3 year OUPES warranty, new original box, come with all cables”