According to their terms of service, Shopify doesn’t do refunds. There is a 14-day free trial, which gives you access to the Basic Shopify plan. But in order to try out the Shopify or Advanced Shopify plan, you’ll have to purchase a paid subscription.
One of their live chat reps told us that there may still be a chance to get a refund, but they are deciding this on a case by case basis.