Changed the lights in mid 2017 to prefacelift ones but with projector LED in low beam
The facelift headlights are very expensive nowadays even the simple halogen ones. So I don't think my cost would be relevant anymore
These headlights costed Rs. 32000 + my original ones were traded in

Height Adjustment Switch 1000
It was night time and I had to travel back so electrician in Bilal Ganj charged 1000 for installation and temporary wiring.
Later paid trusted electrician Another 500 to wire the height adjustment switch.
Regarding fog in headlamps, some manufactures say it's normal if temporary but I haven't seen any Toyota headlights fog up from inside. Even my 20 year old corolla 2D, the lenses have visible scratches (damage from sun) and turned yellow but no fogging up is ever observed.