$415 is a very good price for new!
Actually, the Wonder Finish is a Silver Grey Tennifer surface hardening treatment, similar to Glocks Finish, according to last years EAA brochure.
I have quite a few of the Tanfoglio CZ Clones in my practical collection and like them quite a bit.
My latest one is a Wonder Finished .45 Witness, bought new in February 2004, that compliments my older 1992 vintage Blued .45 Witness, which I still shoot.
The only thing I've had to do to the newer Wonder Finished .45 is to polish the barrel underlug which was a bit oversize and rubbing on the Frame Barrel Supports. Other than that, it's performance has been flawless and accuracy has been excellent!
Some Glock 21 and XD holsters will fit it.
For some further info, you may wish to visit the Clone Section of CZForums, where I also moderate.
http://p201.ezboard.com/fczechpistols82792frm35