I think it’s only as expensive as the compositors time was worth, so lets say 100 an hour at about 20 hours per shot; give or take, 85+ hours. Then production, if run well, could have had everything shot in a day, professional, non-union, 7000-9000.
So fairly cheep as far as music videos are shot.
Most CEO’s spend 20 times that on their golf course memberships every year.