The most important features every shopping cart template free of charge should have are: a free selection of themes, free live chat software, number of products, disk space, bandwidth, security, ease of use, customer support, and the availability of a free trial period.
Testing the template before you decide to use it is crucial. Most shopping cart templates offer a trial period of 14 days and more. There are templates that have 7 days free trial period, but according to experts, one week is too short to try out and analyze the features. Choose the ones that offer at least 14 days free trial period.