Bike Nashbar has lots of older silver alloy Campy stuff at low prices.
Low prices and they often have 10 and 20 % coupons that you can apply to save even more.
In the last few months I have purchased two pairs of their older silver alloy centaur ergolever sets. They are 149.99 and you can usually always find a 10% coupon, and as I mentioned in a previous post they even come with the full boxed cable set.
Ebay has some great deals on older alloy components. Check with the Ebay seller "wheelandsprocket" They are a shop in Wisconsin. They almost always have some good deals on older closeout Campy.
http://cgi.ebay.com/NEW-CAMPAGNOLO-CHOR ... dZViewItem
You will have to be patient if you want all Chorus silver alloy. You could probably do it much quicker if you go Centaur.