It is interesting how much is being asked for those scopes. I checked sold listings, and one with target turrets sold for $310, I assume those asking for $500 for the standard scope are not getting that.
I looked at new Leupold 4-12 X 40's and this one has one has a side focus and big external knobs to adjust windage and elevation:
Leupold Rifleman 56170 4-12x40mm Rifle Scope and it sells for $230 including shipping. The VxII scopes require coins to adjust the windage and elevation and you adjust parallex by grabbing the scope bell and rotating the lens. I have the older scopes and they tend to also have duplex crosshair and I prefer those with dots or mil markings on the crosshairs.
So what is there about the VxII scopes that would make them more valuable than a new scope?