Adam, a couple of hundred pounds if my memory reading the last poor owners scheduling Lexus bills is correct !
There are other posts on here about replacing excellent non-Chinese maybe struts with economically priced UK sourced one's.
The simple fact is that one hardly has to ever have the bonnet up apart from replenishing the windscreen wash bottle ! Everything is dash light intuitive, even the wash bottle too.
And I used the broomstick trick on my first Lexus, a Mk1, for years.
This Mk3 is my 3rd LS in 11 years of magical motoring
Malc