That's above market value. You can buy a brand new Revo 12.4 radial for $499 at Seyberts.
I think that you will find it's not possible to get one at Seybert's or any other retailer for that matter, at this time, unless you have been on their extremely long waiting list and your name finally comes up.
There's a huge backorder on these, real or artificial, that has caused the rise in prices on the secondary markets.
I just got a nice one without all the goodies for $575 and was happy about it. :wink:
best,
brian kc