You will need to install a user script manager extension to install this script.
Copyright: 2011+, KindDragon; 2010+, Zuko; Original author: Tor (http://code.google.com/p/steam-prices/)
License: MIT License; http://www.opensource.org/licenses/mit-license.php Thumb Thumb Thumb Thumb
Displays prices from all regions in the Steam store and convert them to your local currency
When viewing a game in the Steam store the script will modify the page so that prices are displayed in all 15 currencies. (USD, GBP, EUR, RUB, BRL, JPY, IDR, MYR, PHP, SGD, THB, CAD, MXN, NOK and TRY).
Extension based on script from Steam Unpowered http://steamunpowered.eu/comparison-script-steam-unpowered-edition/