This is the Congressional Budget Office (CBO) Cost Estimate as ordered reported by the House Committee on Foreign Affairs on August 1, 2013. From the Document: "H.R. 419 would authorize the sale of four naval vessels to Taiwan. That authority would expire three years after the bill is enacted. CBO estimates that all four vessels would be sold over that period, for about $10 million each. CBO estimates that enacting H.R. 419 would reduce direct spending by about $40 million over the 2014-2016 period. Under the bill, any additional costs related to the sale, including costs for refurbishment of the vessels, would be paid by the recipient country. Such amounts are typically paid directly to the private shipyard that does the work. Enacting the bill would affect direct spending; therefore, pay-as-you-go procedures apply. Enacting the bill would not affect revenues."
Congressional Budget Office: http://www.cbo.gov/