I purchased the Lego Space Shuttle in October, 2012 for my nephew for $94.99. I had so much fun putting it together with him a couple years later that I decided that I want one myself and it's now at $300:

http://www.amazon.com/LEGO-4657599-Shuttle-Expedition-10231/...

I know this because Amazon has a notification at the top to tell me that I purchased it in 2012 and I can see the order. In the span of 2.5 years, it's tripled in price.

I wish he had done a graph of the prices for the same sets over time. That way I can compare if it is the Space Shuttle set that's skyrocketed in price or if it is across the board.