I have the Squire Line version of this sword- and I bought it after handling Sir Edward's Knight, talk about lively. As far as handling goes, it is probably my favorite sword. With the exception of the rivet block and elegant guard, its near identical to the SL - minus the aging too.
Since it is a popular sword, he might get what he's asking for it, especially since its been aged. If he was only asking $600 I suspect it would already be gone.