From what height did it fall and did it fall on it's back or on it's face?? The bulk of that high costing is the breakers and the protection relays (if any), if they weren't damaged it's just the internal formwork, bracing and casing that needs replacing. Had a similar experience some 15 or so years ago. The manufacture sent over an Engineer and fabrication team. Within the week, all the parts that were assessed to be damaged were on site and the switchboard being re-built. Took about 10 days in total to rebuild and conduct factory level off line testing and commissioning.
All depends on how far the Switchboard was dropped from, if it tipped over backwards at ground level (as was our case above) then the damage wouldn't particularly warrant a complete new build...