Here is an auction with fully rebuilt cannons,should be a good gauge of the current pricing if it goes the distance and is not sold beforehand looks in pretty good nick too. http://cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&item=150823184097

8 hours to go and it is sitting at $3550 Notice the 0 bidder has been driving the price up on the auction.