Oh, I hadn't thought of that! I will definitely keep watching Craigslist, thank you!
I am having a hard time giving up on the idea.

I've taken care of friends' hens before and loved it so much. Chickens are such wonderful, hilarious, adorable creatures. I'm still poking around, looking at at scaled down or just less expensive coop ideas.
Once the coop was established my housemate would be fine with the upkeep: we calculated the costs of keeping hens vs. buying eggs and we'd either break even or come out a little ahead. Our goal is eggs from hens that are lovingly raised in healthy, happy, safe conditions, and to reduce our reliance on the stores. I have a history of pulmonary disease so we've both been in self-lockdown because of COVID and are severely limiting our trips out to grocery stores. We eat a lot of eggs and give them to our dogs, too.
The stumbling block is just the cost of a safe, sufficient coop appropriate to the whims of the desert weather and one that we can comfortably maintain (no bending, please, we are middle-aged with back issues)!
There's so much here to look at in terms of designs here. I'll keep perusing. I'm sure there's an answer for us somewhere.