It took 30 years for the U.S. to understand how brilliant a stroke Seward's purchase of Alaska had been, and there had therefrom developed a considerable faction who advocated attempting to buy more land from Russia. A 'replay', as it were.
I got that point. It is one thing to buy it. It is another thing to keep it. France would have lost the Louisiana purchase to us sooner rather than later, so they might as well have sold it. If we had bought the Duchy of Savoy, we would have lost it at least two world wars ago.