Full featured and easy to use

Ecwid’s shopping cart does what it says. You can start with a free version that supports 10 or 15 products. The free version is not a trial with a time limit. There are a few features that the paid version has that the free version does not, but if your product list is small you can use it for free. However, the paid plans are reasonably priced and the support staff are knowledgable. I have used it for many years and have had very few issues.