To change the currency or the site language, go in the top right of the screen. From there, click on the flag to switch from French to English and vice versa. To change the currency, click EUR and choose another currency.
Please note that the currency is only displayed for your reference. Your actual payment will be processed in the currency based on your current location, in USD (if you are based in the USA) or in EUROS (for any other location). There may be conversion fees appeared in your credit card.