What is a 1905 golden dollar worth?

Please take another look.

First, the U.S. didn't mint any $1 coins in 1905.

Second, from the end of the 19th century up to 1935, $1 coins were only minted out of silver and they were much larger than modern $1 coins.

Third, the so-called "golden dollar" is actually made out of brass and was first struck in the year 2000.