Why is the price of new tonearms so high

Wow, I am learning a lot in this thread about the arms and cart behavior. I am still not clear on static and dynamic balanced arm concept. Can anyone explain what are the differences. I am an engineer so I know what static and dynamic is, but in tone arm context what exactly does this mean?

Thanks,

Nil

So it sounds like the dynamic balanced tone arms have always positive VTF due to 'preload' provided when record is spinning by the spring. As Raul indicated, dynamically balanced may not be exactly the right term (not 100% balanced at every slice of time but still close enough to maintain contact, always), but the point is there is always positive VTF v/s -negative at times( warped records, highly dynamic music contents. etc). Thanks, no wonder I never come across this term as all my three tone arms are 'statically balanced' ( Clearaudio master TQ1. , SPJ by La Luce and Transrotor RB250)

I would guess terminolgy will still apply for tangential ton arms. Any tangential arms come with spring loaded VTF? Another question, while I am at it is: Why sound and freq balance changes higher the VTF gets? How do you know what is right VTF other than by ear? What is max VTF? What if higher than allowable max sounds right?