I was surprised to stumble onto really nice copies of Avalon Hill's 1914 and Afrika Corps at a thrift store for $4 for the pair.  They look like the 1960's printings but in surprisingly sharp condition, and don't really look like they could be that old.  Does anyone know of a website like Aceaum for old Avalon Hill games?

I've picked up a couple dozen Avalon Hill games from thrift shops usually between 50 cents to $5.  Over the past 4 years, I have probably picked up about 30-35 including a number that are in perfect condition: unpunched counters, perfect boxes.  I've had 3 or 4 copies of Acquire, 2 copies of Rail Baron, 2 Tactics II, 2 D-Day, 2 Blitzkrieg, etc.  Most are from the early to mid 70s.  I think they were probably produced in larger numbers that one might casually think.