[Bruce Wayne]

Well that's good news.

The bumpers on the boxster are designed to deform and they will quite a bit, without damaging the bodyshell. a replaced or repainted PU will not affect the value of your car, dealers often repaint the front PU on Porsche due to stone chips and the saleable presentation of the car. To be honest many new cars on the forecourt have had paint even before first registration due to transit damage.

My paint guy does quite a bit of work for main dealers due to such damage!

I had my boxster smacked in the rear in Airport Parking at London Heathrow the bumper deformed up to the licence plate popped back out with no serious damage.

However my front PU needed painting anyway due to stone chips.

One thing to check is the rear spoiler operation, the metal strip that runs along the top of the bumper mounting can get pushed against the spoiler so when the spoiler operates it will scratch the black finish up. its not major but you'll be pissed when cleaning it with the spoiler up and notice the scratches after having the car repaired ! when the PU is removed makes sure they check for any panel deformation too.

The rear PU is no big issue, its 15 minutes to remove however, make sure the body shop that does the work is good at paint, if you can, ask to see some their cars in finishing so you can see the skill of their sprayers. Do bear in mind that metal and PU will have a slightly different colour match anyway as they are different materials.

The best news is that it was only a bump and you and yours are fine.