Paradigm Monitor v4/v5 pricing question

[Eponymous]

Years back, when I was a little more flush with cash, I bought most of a 7.1 system from a Paradigm dealer; at the time, I was intending to replace my old Inifinity fronts with Studio 80s... but then life changed, and I didn't.

So now my Infinitys are dead, and my wife never liked em anyway, so I'm looking at some Monitor 9s (v4) or 11s (v5) - a little more budget friendly for me than the Studio 60's I would prefer.

Anyway, I have no idea what these would have sold for when they were on the market, so I really don't know what a fair used price would be for either (both are in very good condition).

Any advice at all would be much appreciated....