In my possession was exactly 10,800 World Stability Units.
Was this the richest I had ever been? The answer was unequivocally yes, and it wasn't even close.
Last time I came close to having this amount of money, I had to invest almost every penny into the Draconic Shadow armour set. Well, it was one of the best armours available in the Shop, and it continued to serve me well even now, so I never complained.
Unfortunately, it did sustain a couple of rips and tears due to the unexpected ability of that woman in John Pierce's party, but thanks to the physical regeneration feature of the armour, that issue would solve itself with time.
Although, that's only because the opponent's weapon was a dagger-type. If it was any larger, I doubt even that much could be repaired, so it could indeed be said that I lucked out there.