Calculating bonds held to maturity: On July 1, 2010, Richmond Company purchased 8% bonds of Commonwealth Corporation with a par value of $400,000 for $350,000 to yield 10%. The bonds are to be held to maturity and pay interest semiannually on June 30 and December 31. The market value of the bonds on December 31, 2010, was $380,000. Richmond should report the bond investment at December 31, 2010, at ?