TRF is conducting a post completion audit on an investment in a pollution control machine...

TRF is conducting a post completion audit on an investment in a pollution control machine that has reached the end of its five year useful life.

TRF could have been heavily fined if the machine had failed to keep pace with the output of emissions, measured in units. TRF's cost of capital is 10%. When the machine was purchased, there was a choice of three machines on the market:

TRF purchased the Big machine, but annual requirements only exceeded 600,000 once, in year 3, when 720,000 units of emissions were emitted.

Calculate the amount that the post completion audit shows TRF overpaid for the ownership costs associated with this machine.

Give your answer to the nearest whole $ (in $'000s).