http://arstechnica.com/gaming/news/2010/10/an-inconvenient-truth-game-prices-have-come-down-with-time.ars
edit: http://vgsales.wikia.com/wiki/Launch_price?image=Launch_prices-png, too. Adjusted for to 2006 dollars, the Atari 2600 cost around $650.
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As for being anti used-sales..... even as someone who's taken advantage of used sales, I'm not surprised that the companies are going that route. Given the profits that Gamestop keeps gouging out of their IP, without giving them a cut, it's completely understandable that they want to put the brakes on it. If I was in their shoes, I'd be tired of someone else raking in massive profits off my work, too.

(Also, based on the articles I've read, most of the "anti used game" stuff comes down to just making this "online pass" thing centralized, so that every publisher doesn't have to come up with their own system, and it can all just be centrally managed by the console networks. Even if Sony & MS didn't do build it into the systems, you don't imagine that every single big-publisher game would have some sort of online pass mechanism within the next couple years?)