Suddenly life is not so simple any more... crazy2

I have come across a LHD 1990 Plus 8 3.9L - 22369 miles and I haven't a clue how to value it. So far I have only seen some photos but it looks quite nice. There is no crash reported.

I'm not sure that I need a Plus 8 but it would be nice to at least have driven one.
Help please sos

-99 4/4, 1.8 Zetec, Indigo Blue, 2-seat, Suplex RS
-04 Citroen Pluriel, 1.6 Sensodrive, Met Orange