It has been over a year since a "holy grail" was discovered in the world of retro gaming. The complete version of Air Raid for the Atari 2600 was discovered in California and it fetched over $30K. The important part of this sale was that it contained the instruction book. This was the only one that was known to be in existence.
The final selling price of over $30K was mostly due to the instruction book but also in part that the box was in mint condition. This could be the best one that will ever be unearthed.
The gaming world awaits another "holy grail" such as this one to come along. We only hope it will be as big as the complete Air Raid was.