[volvocat]

There is always a trial period for P* - usually 14 days, although it may be longer for the current offer.
I've added it to three cars now and it’s always been offered, regardless of price.
But after the first one, I felt it was unnecessary - obviously!
The usual arrangement is that the dealer installs it, you trial it and pay up if you want to keep it.
If you don’t pay or return to the dealer after 14 days, they can delete it remotely anyway - so they say...