Price of Weed (or priceofweed.com) is a user-generated database of marijuana prices. Users may submit prices and quantities for transactions, and their location is geolocated in order to generate a price index for states and cities. While user-generated prices have no inherent check on accuracy, the criminal status of marijuana in many countries means a formal price index may be difficult to construct.[1][2]
In August 2011, Matthew Zook, a professor of geography at the University of Kentucky, generated a detailed heatmap using data from the site.[3] The map was included in an issue of Wired[4] and drew attention to Price of Weed from Barry Ritholtz's Big Picture and Flowing Data.[5][6] In 2014, Allen B. Downey, a professor from Olin College, utilized data from Price of Weed in his book Think Stats: Probability and Statistics for Programmers (Second Edition).[7] In May 2015, Frank Bi of Forbes published a piece title All 50 States Ranked By The Cost Of Weed.[8] In June 2015, The Washington Post generated a detailed infographic portraying pricing data from eight major US cities. This marks the first data shared publicly portraying a time series of data by city from Price of Weed.[9] In August 2015, Mingshu Wang from The Department of Geography at University of Georgia generated a detailed graphic portraying the crowdsourced data from The Price of Weed.[10] In October 2016, David Floyd of Investopedia published an infographic in a post titled What Does Weed Cost in Your State?[11]
^"Price of weed". Flowing Data. August 29, 2011. Archived from the original on January 15, 2012. Retrieved March 8, 2012.
^Ritholtz, Barry (August 31, 2011). "The Price Of Weed in the US". The Big Picture. Archived from the original on July 9, 2012. Retrieved March 8, 2012.
