On the used market you'll find absolutely cooked (literally) Leafs whose first life was in Arizona and barely have enough range to back out of the driveway.
I use it in my driveway to make it look to thieves like someone is home (round me, houses with no car get broken into).
It seems like procuring the battery is not as expensive as the Tesla battery (I see someone who did it themselves for $6k on Youtube with the battery from a wrecked leaf). In comparison, the cost I see for my Model 3 is about ~$18k CAD.
Getting a car up and running for $8k might be worth it if it is otherwise dependable, but I've only heard unfortunate stories about the first gen Leaf.