Frigidaire Gallery portable air conditioner in excellent condition. This was Wirecutter's previous upgrade pick for portable AC (their current pick is the newer version). Bought in 2022 for $600 and used a handful of times before moving to a place with central air. Still works great!
Comes with wifi control. You'll need to get a window kit / adapter to use with a sliding glass door or long window opening which you can get from the hardware store. $75 OBO
See additional details here: https://www.altonrefrigeration.com/product/frigidaire-gallery-13000-btus-white-portable-wi-fi-air-conditioner-ghpc132ab1-709626