Seriously? I think you need to revise this number, as you are charging many times more to simply copy files between healthy drives than what most data recovery labs charge for that amount of data from a drive with crashed heads.
A 2TB drive that is perfectly healthy and just full being copied to a larger 3TB drive:
Your price is, based on the above math, $2039USD (I'm assuming the USD part)
A 2TB drive with a blown PCB, Stuck Heads, Firmware Issues, Bad Sectors and File System issues, completely full:
My price is $350CAD for professional data recovery services
Is my math off? Am I missing something?