Stu,

Here is a $4500US 375 at Hendershots from the Custom Shop.

http://www.hendershots.net/gunview.asp?GunID=229

I would suggest ringing the Winchester Custom shop because the website has several errors.

I did read sometime ago on 24HourCampFire that Winchester does guns well above what the website shows for custom guns.

The 416 Rigby in M70 as far as I am aware was 5 rifles and that what is it.

Mike