Sheetrocking the garage increase it's value?

I bought a duplex, the garage it not sheetrocked. You can see the whole skeleton of the garage. Half of it is insulated. I figured out the cost to insulate it further and sheetrock it. Material + labor cost me $600. Duplex value is 148,000, I bought it at 147,600. So do you think it would be worth it? I don't care personally tenants (a friend) lives there. But I want to do it to possibly increase the value + it would look MUCH better. Would the 600 dollars be more to home value or self pleasure? And how much do you think it would increase in value? I appreciate your responses. Thank You!