Ouch... 4k
without CPO was already pretty stiff - but
on top of CPO (which you paid extra for that coverage to begin with) - it should have been
significantly lower. The CPO
already covers your engine, trans and drivetrain to 10/100. Sure - your extended fills a bit of a gap on the other, non-powertrain parts stop on CPO at 75k - but the reality is there is not usually much issue there outside of the clock spring in the steering
wheel, the heated seat or the delaminating infotainment screen. The long and short of it is that you paid 4k for a 20k mile warranty on the important stuff. No - I don't mean your sales guy got dinner - I mean the whole damn team.
I was quoted ~2800 through Route66 (120k), 3100 through Endurance (100k) and 3300 through MaxCare (150k) - all on the G90. All of these are non-CPO, btw, on a car with less than 40k on it. And other than Zurich or Fidelity - those are the only 3rd party warranties that are worth a damn. When I had the G80 the HPP warranty was B2B 10/100 on CPO and it only cost me $1200.
Despite the comment about dinner for the team - I am not at all trying to be a wise guy. But am suggesting your experience has been costing you excessively if you are consistently paying 4k for ~100-120k on a CPO. A lot of that money is going to something that is already covered by the warranty you had with the car. On your next buy - maybe talk to your credit union (yes - credit union... if you aren't doing this instead of a traditional bank already, then that's a whole other issue) and see what 3rd party warranty they have. If it is one of the above mentioned (less MaxCare of course) - chances are they are going to be about 25% or more under what the dealer is selling you on for 3rd party. For them it is nothing more than a money making opportunity - and they are
fiercely driven to upsell them. Probably half of that 4k went into the cash drawer at the dealership - and likely 1800 or so went to the warranty company.
I literally winced when I read your response... it literally hurt to read.

EDIT - oh, and paying that much for a Lexus warranty is mind-blowing, as they have the least risk of all when it comes to failures. Their extendeds are historically lower than almost anything else other than Toyota or Honda/Acura.