Hi, I have a Crown Macrotech 2402 in good working condition (SN 0070 513679). I haven't used it since purchase because it is meant for 120V and not for 230V, the voltage of my country. I am second owner. According the first owner the unit hasn't been used heavily and was most of the time sitting in the equipment rack as a spare amplifier.
The exterior doesn't show dings or scratches, it is well maintained. It can also be shipped to abroad, but shipping cost would be quite high because the unit's weight of nearly 60 lbs.
On the other hand, asking price of $ 550 for this unit is very reasonable. Price is firm.