I think the collectible value of “only rover on the moon” would be extraordinary regardless of functionality.
That's how much Richard Garriott (son of astronaut Owen Garriott, creator of the Ultima game series, and after that, private astronaut that spent 12 days at the ISS) spent to purchase the rights to Lunokhod 2 and the Luna 21 lander.
If it had been launched fast enough it could have become the first American (self-driving) rover on the moon. And still among the first ten rovers. That would be worth something to some collector