Dale here is another one on ebay
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&category=33566&item=2430849748
I have one that I have to get at least 850.00 for to cover my cost on it,the one above is listed as a buy it now for only 950.00
so some simple math here
2-nos screw in caps are at least $ 100.00
(mine has one repo cap and one nos)
1-rebuilt and replated boster at least $300.00
(mine is the master only)
1-rebuild of a master cylender from white post 150.00 plus shipping and handeling at least 170.00
mine is allready rebuilt )
This total's 570.00 out of the 950.00 means your only paying 380.00 for the master I thinks its a good deal,
As for how I found it on ebay I have about 6 saved searches I use that dig up practiclly anything to do with a midyear corvette.But when I was seaching for a master I had 3 searches I used that did not search only in corvette I searched with a part number and the words screw in caps in case some one had one and did not know what car it belonged to.
(I had found a freind a correct distributor for ls6 chevvelle that way )
Good luck with it