The world is full of used ok euro doubles that will meet your requirements. As a example, here is what looks like a 60's gun, sidelock, ejector, Brno/CZ (made in the Czech Rep, not a Turkish gun marketed by CZ)on Gunbroker that is currently sitting for under $300
http://www.gunbroker.com/Auction/ViewItem.asp?Item=57552359 Even if it closes for $500-$600 its a deal. I also see a lot of AYA's that close for under $500. Good solid guns that beat Stevens 311's and Fox model B's for both quality and often cost.
