Is a CPO Boxster S worth 4000$ more?

[J-RAD]

Is it worth $4K? No.

...and, as a general statement without knowing a lot of the details, the price on both cars sounds very good.

[blinkwatt]

I wouldn't just because the mileage is pretty much past the point of where anything major should have shown up by now.

[djomlas]

i would also have to agree that $4,000 is a lot.

[Perfectlap]

it's not a competitive price but not outrageous either,those aren't brand new cars.
An aftermarket warranty with Warranty Direct (one of the best) with bumper to bumper coverage was quoted to me at roughly $1K a year for a minimum of three years, that was back when my car had just gone over 30K miles and was about two years out of factory warranty. And obviously the more miles and years go by the more the price of the warranty goes up.
Also, the aftermarket warranty came with many more restrictions than what a CPO warranty would come with. I think Warranty Direct has/had at one point ceased covering RMS replacement entirely or decided not to cover certain 996 911 engines because so many have gone bad.

I would see if they would be willing to go 2 years full warranty and tack on another 2 years for the engine and drivetrain. Or a full 3 years, particularly if you plan to drive more than 7K miles a year. Call up warranty direct and see how long two years will run and weigh your options. If these guys are unwilling to work with you move on.