A Susan B. Anthony dollar is worth between $2 and $12. The worth of this coin depends on when it was minted, if it is a proof and its condition.
The only Susan B. Anthony dollars minted as a proof were the 1979 S, the 1980 S and the 1981 S. These coins are more rare and worth more. The 1979 S is worth around $12, the 1980 S is worth around $11 and the 1981 S is worth around $10. Dollars not minted as proof coins are generally worth between $2 and $6.
These prices are accurate as of March 2015 and are subject to change without notice.