Is it overpriced?
I tend to have the attitude that since Amiga is a dead platform, the hardware prices should reflect this. That said, I think 100-200 USD is pretty outrageous for an old video card.
But, as I thumb through old magazines, I notice that cards like this sold for $550 "1993" dollars.
So I guess it has taken quite a fall!
Still ... I wish I could recover even 20% by selling my outdated nVidia TnT and GeForce cards. Computers really are commodities now.