[steve86]

Definitely fast food (quick service restaurants) nearly doubled prices during that period of time. My standard breakfast went from $3.37 to $5.79 @ BK. Similar at other chains. Partly due to minimum wage going up and other factors.

[Drago]

Yep, I have my own personal “Carl’s, Jr./Hardee’s Inflation Index”...my benchmark “Santa Fe Chicken Sandwich” large combo is up from $7.89 to $12.25 over 10 years.

[af_vet_1981]

Here is some evidence for the rate of increase in the price of a hamburger over those years. It seems to have more to due with the company. The standard McDonalds hamburger(which I remember at ten cents), rose from $0.71 to $1.00 from 2008 to 2013, well above the average inflation rate but not close to "doubling."

• In 2008, your burger cost an average of $0.71.
  Price at McDonald's: $0.89
  Price at White Castle: $0.53
  
• In 2010, your burger cost an average of $0.77.
  Price at McDonald's: $0.89
  Price at White Castle: $0.64
  In inflated August 2018 prices, you'd pay $0.90 for the $0.77 average burger.
  
• In 2012, your burger cost an average of $2.61.
  Price at McDonald's: $1.00
  Price at Burger King: $3.15
  Price at Wendy's: $3.69
  
• In 2013, your burger cost an average of $2.20.
  Price at McDonald's: $1.00
  Price at Burger King: $3.25
  Price at White Castle: $0.64
  Price at Wendy's: $3.89
  ...
• In 2018, your burger costs an average of $2.64.
  Price at McDonald's: $1.09
  Price at Burger King: $4.29
  Price at White Castle: $0.75
  Price at Wendy's: $4.44