Check very carefully for rust damage. A really fine car and can be very
reliable. Can also be very trouble prone. If you can not do your own
maintenance and repairs, be sure you are willing to bear the possibility of
very high costs of labor and parts.

Don Young USA

I suppose it's fair to say that a car is worth what you are willing to pay
for it, but I should think that there are quite a few lovely late 80s XJS
around for half that money.
The condition and mechanics are something for you to judge for yourself, but
a couple of little things to look for in a car that should be 'beautiful':
The chrome on the bumpers, not the bits you can see but the bits you cant.
XJS bumper chromes will rot from the underside. The chrome can look really
good on the outside but it could be sitting on rotten steel.
On each side of the boot, feel down in to the valences behide the rear
wheels. another place where hidden rot can be happening. Also, in the boot,
feel under the steel of the bottom of the rear windscreen. And a favorite
place for them to rot is the top of the trailing arms of the rear
suspention. You cant see it even if you get under the car but it's easy to
run your hand on the top of the bars that run from from to back just inside
of the from of the rear wheels.
I've owned two (still got one V12) Lovely to drive, but the most impractical
car I've ever had.but even so, still my favorite.

Ivar