See United States v. 62.17 Acres of Land in Jasper Cty. , 538 F.2d 670, 676 (5th Cir. 1976); cf. United States ex rel. Tenn. Valley Auth. v. Welch , 327 U.S. 546, 554 (1946) (“The cost of public projects is a relevant element in all of them, and the government, just like anyone else, is not required to proceed oblivious to elements of cost.”).