Amazon price charts for video games and movies

CamelCamelCamel.com provides price charts of Amazon.com items, including their 3rd party used value.  I use this to track video game and movie values like stocks, by using price charts.  Here's a price chart for Mario Party for Nintendo 64.  It had a lifetime high used value at $47.40 on March 6, 2015.  PriceCharting.com is also a great resource, but since I primarily do my selling on Amazon, I only find that useful to see if someone has listed something on eBay or Half.com for noticeably lower price.

If the stock market has a likely 15-20% correction soon, it may affect video game prices too.