The component bullets are $24 per 50
So you bought 40 loaded rounds for $30
That's a pretty good deal.
I would save them for something special and not for target practice or hunting deer.
I have shells that are Government issue, 1906 30' Government.
I will guarentee you that they will shoot every bit as good as the day they were made.
Shells don't go bad as long as you keep them clean and dry.