I'm not sure this car is a fantastic deal, but neither is it a terrible one if it meets your range requirements.
The leafs are great little city cars, for people who commute reasonably short distances. They are cheap to buy and cheap to operate, and fun to drive. The asking prices seem essentially proportional to mileage at this point, much more so than you would expect for a gasoline car, because of the anticipated battery degradation. Particularly for an early model car (with the old battery chemistry) from a hot climate like AZ, battery damage is a real concern.
These cars are dirty cheap, though, because there are so many other EVs coming on the market now with better battery technology. Including the new leafs. That's really pushed the prices down.
I think the question is whether or not you really want a zippy 2013 small car. If you do, you're unlikely to find a better one for a comparable price than a used leaf.
Comparison: In March 2016, we bought our 2014 S with quick charge option, seat heaters, updates lizard battery. It was manufactured in July 2014, and leased in MO in Sept 2014. Had 3,800 miles on it when we bought it. So we essentially bought a 20 month old car (July 2014-March 2016) with 3,800 one leaser miles on it.
We sold a 2005 Ford in fair condition that was starting to need major repairs. The 2005 Ford was purchased used in March 2006.
We spent $8k out of pocket on the new to us Leaf (including sale of $5k on the 2005 Ford Explorer).
For our purposes, the Leaf is our daily driver. We also use it to visit siblings out of town, 45-60 miles away, and the car does fine. Note: both siblings have 220v chargers at their homes.
We did invest $600 in a 220v open source home EV charging system. Best investment ever. We have a system that will earn us the 30% federal tax credit due to wallmounting brackets. However, we have a homemade system of adapters and we travel with it to aforementioned siblings' homes.
Our second, rarely used car is a 2006 Toyota Camry, with 71k miles on it. Used only for rare long road trips.
We researched the Leafs extensively before purchasing. It's a great daily driver. I would recommend a 2014 or newer, garaged only, since you live in AZ.