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Amazon Force Currency Selector (Interactive)

Forces the currency on Amazon and asks which currency to display, works on all Amazon domains

Cómo instalar

Tendrás que instalar una extensión para tu navegador como Tampermonkey, Greasemonkey o Violentmonkey si quieres utilizar este script.

You will need to install an extension such as Tampermonkey to install this script.

Tendrás que instalar una extensión como Tampermonkey o Violentmonkey para instalar este script.

Necesitarás instalar una extensión como Tampermonkey o Userscripts para instalar este script.

Tendrás que instalar una extensión como Tampermonkey antes de poder instalar este script.

Necesitarás instalar una extensión para administrar scripts de usuario si quieres instalar este script.

(Ya tengo un administrador de scripts de usuario, déjame instalarlo)

Cómo instalar

Tendrás que instalar una extensión como Stylus antes de poder instalar este script.

Tendrás que instalar una extensión como Stylus antes de poder instalar este script.

Tendrás que instalar una extensión como Stylus antes de poder instalar este script.

Para poder instalar esto tendrás que instalar primero una extensión de estilos de usuario.

Para poder instalar esto tendrás que instalar primero una extensión de estilos de usuario.

Para poder instalar esto tendrás que instalar primero una extensión de estilos de usuario.

(Ya tengo un administrador de estilos de usuario, déjame instalarlo)

Autor
jarecot
Instalaciones diarias
0
Instalaciones totales
6
Calificaciones
0 0 0
Versión
1.1
Creado
30/11/2025
Actualizado
30/11/2025
Tamaño
3,43 KB
Licencia
MIT
Funciona en

Amazon Force Currency Selector (Interactive)

Version: 1.2 Author: Dr Jared License: MIT Last Updated: 30/11/2025

Description

This userscript forces Amazon to always display prices in a currency of your choice, regardless of the domain you visit or any automatic currency overrides Amazon attempts internally.

It works across all major Amazon domains, modifying cookies, URL parameters, page navigation, AJAX/fetch requests, and all internal links. Simply set the currency you want inside the script, and Amazon will be forced to use it everywhere.

This script is ideal for users who want Amazon to always display prices in a consistent currency (e.g., COP, USD, EUR, BRL).

Features

  • Forces a chosen currency on:

    • .amazon.com
    • .amazon.com.br
    • .amazon.ca
    • .amazon.co.uk
    • .amazon.mx
    • .amazon.de
    • .amazon.fr
    • .amazon.it
    • .amazon.es
    • .amazon.in
    • .amazon.co.jp
    • .amazon.com.au

  • Automatically rewrites all Amazon links to include the ?currency=XYZ parameter.

  • Forces currency preference cookies every 500 ms.

  • Intercepts SPA navigation (history.pushState and popstate).

  • Intercepts fetch() and XMLHttpRequest calls to block Amazon attempts to switch currencies.

  • Works immediately on page load (run-at: document-start).

How to Choose the Currency

Inside the script, find this section:

// --- CONFIGURATION: Change your desired currency here ---
const FORCED_CURRENCY = "COP";

Change "COP" to any currency code you want. Examples:

Currency Code
US Dollar "USD"
Colombian Peso "COP"
Brazilian Real "BRL"
Euro "EUR"
British Pound "GBP"
Mexican Peso "MXN"
Japanese Yen "JPY"

Example: To force prices in USD, change it to:

const FORCED_CURRENCY = "USD";

Save the script and refresh Amazon.

Installation

  1. Install a userscript manager:
  • Tampermonkey (recommended)
  • Greasemonkey
  • Violentmonkey
    1. Click Install this script on Greasy Fork, or paste the userscript manually into a new script.
    2. Edit the FORCED_CURRENCY value according to your preference.
    3. Visit any Amazon domain — prices should now be displayed in your forced currency.

Compatibility

Tested on:

  • Chrome + Tampermonkey
  • Firefox + Tampermonkey
  • Edge + Tampermonkey
  • Opera + Violentmonkey

Works on all Amazon country websites listed above.

Known Limitations

  • This script does not modify actual prices, only the displayed currency.
  • Some Amazon pages might override currency temporarily, but the script immediately corrects them.
  • If Amazon changes its internal structure or currency-handling system, updates may be needed.

Source Code

The full script is included directly in the installation page on Greasy Fork.