I looked at this Max with a mate back in 2019/20, when it was up for sale with a different high end vendor. It was in very tired condition inside and out, with the wheels on the wrong end front to back, cracked windscreen and no paperwork V5 or service history available.

It certainly looked like it had had a hard life with its first owner in both Monaco and London. If it's as good as advertised then someone has spent a lot of money.

David
Aero S4