Hello Natalie,
Thank you for interesting in our EShop Shopping Cart extension. Regarding your question: Yes, our extension supports multiple currencies. You can add any new currencies to your site if you want, then on the front-end side, customer can choose the different currencies to see the price and place the order.
You can read more about it in the documentation at
eshopdocs.joomservices.com/system-manage/currencies
Hope that this is useful.
Sincerely, Giang