Hi Ron...didn't realize you were a bike rider? Total cost will be around:
$500 frame - CroMo steel
$1,300 Rohloff SpeedHub
$450 Bafang Mid-Drive
$400 Battery
$250 Gates Carbon Drive components
$125 each for rims/spokes/tires
All other components brakes/seat/seat post/pedals/cables/Misc. About $250
$3,250 to $3,500.
My Titanium bike build was closer to $5,000, but the Titanium frame was almost $2,000.
But you get exactly what you want....plus I'm somewhat obsessed with bike riding.... ;))