Short answer is yes, but you'll have to dig up suppliers and handle the form factors on your own. Used EV batteries (i.e. once their capacity becomes an issue for use in a car, or after the car is wrecked) are commonly used for things like grid storage and home battery backup.

You can try to get one from a junkyard, but usually someone else has beaten you to it.

Start an EV manufacturer in China and you can have it for that price.