You have some options and the trade offs are different:

1. Shopify: Easier to setup and integrate everything. Monthly fee and is on the expensive side + Domain costs
2. Wordpress self hosted: Takes time to setup. Hosting and domain costs. More customizable and needs maintenance
3. Squarespace: Same as Shopify but a little annoying for ecomm. Cost slightly lesser than shopify. Not really recommended in the long run

For ecommerce, I have seen shopify being used most of the times.

If you want support setting up the store, let me know.