You can determine the value of a gold dollar coin minted in 2000 using price tables from PCGS.com and NGCCoin.com. Coin values vary based on condition, on a scale of one to 70.
The 2000 gold dollar coin released in the United States is known officially as the Sacagawea Dollar. In good condition, normal Philadelphia-style Sacagawea dollars are worth anywhere from $1 to $1.15 as of April 2015. Mint versions of the coin are worth about $375 to $5,500. Special rare versions of the coin, such as the Wounded Eagle and Cheerios promotion varieties, have a higher mint condition value than the standard Philadelphia version.