yes, it seems to be the 'norm'

MO:
AC installer come, ask where you want the indoor unit, and the outdoor unit
takes measuring tape, measure distance between indoor unit and outdoor unit.

depending on path taken, it could varies greatly.
the thing i can't remember is: 10ft for price of copper pipe (5ft actual distance since need a return pipe), or actual 10ft distance (20ft copper pipe used)

additional cost:
plastic trunking to hide the ugly black insulation: count per piece used (about rm50 for 20ft trunking)
pull new wiring (if the AC place don't have outlet)

mine was an additional RM450 on top of the 'free 10 ft' installation that comes with the AC purchase. way back in 2016