The Best Price Comparison Maps

 The Aldi Price Map

The Aldi Price Map shows the store price ticket of a range of products in US outlets of the popular budget supermarket (apparently the price data from European Aldi stores is not so readily accessible). 

The German supermarket chain Aldi is known for its low prices. The company now has over 2,000 stores in the United States, and in a recent poll was ranked the most popular grocery store in the country. Using the Aldi Price Map's drop-down menu you can select from a range of popular grocery products to view the current price of the product in Aldi stores across the United States. "Store pricing may change without notice and may differ from the information provided on this site".

The Big Mac Index

The Economist's Big Mac Index compares the purchasing power parity (PPP) between the currencies of different countries by examining the price of a Big Mac hamburger sold at McDonalds' restaurants in each country. The Index "is based on the theory of purchasing-power parity (PPP), the notion that in the long run exchange rates should move towards the rate that would equalise the prices of an identical basket of goods and services (in this case, a burger) in any two countries". 

It can also be used to find out the price of a Big Mac in countries around the world. 

The McCheapest Map by Pantry & Larder tracks and maps the cost of a Big Mac at every McDonalds in the United States. On this map every McDonalds' outlet is represented by a dot which is colored to show the cost of a Big Mac (green=cheaper and red=more expensive). The map can therefore be used to explore the purchasing power parity of the dollar in different areas of the United States. It can also show you where you can buy the cheapest Big Mac.

Wetherspoons

Pantry and Larder have also created a number of other popular price comparison maps. For example in the UK their How Cheap's Your Local 'Spoons map allows you to compare the prices of a huge number of alcoholic drinks in Wetherspoon pubs through the United Kingdom.

Another popular price comparison map from Pantry and Larder is Eggspensive, which compares the cost of a dozen eggs at every US Walmart.

Gas

Maps showing the price of a gallon of gas at local gas stations were once very popular. Now they are much harder to find. Sites such as GasBuddy and AAA do provide aggregated price maps which show the average price of a gallon of gas at the county or state level.

GasBuddy also allows you to search for the price of a gallon of gas at individual gas stations in different cities across the United States. It just takes a little work to select a state and your city. You then have the option to view the results of gas prices on a map by selecting the 'show map' option.