Really cool infographic. You’ve got just about everything covered. I actually sell a product just using paypal since I thought it might be the easiest for me to set up and it is what I am most familiar with. I guess really lots of ecommerce solutions even integrate with paypal however I do not run the sales of my products as a store just individual sales pages for a pay per product approach.
BigCommerce is most easily compared to Shopify. Both platforms offer a similar experience when building an ecommerce platform. Like Shopify, BigCommerce offers a range of prices and packages tailored to different types of businesses. The platform is highly customizable if you are comfortable with some light coding. It is also possible to use themes and templates to build your website, but some of these will come at an additional cost.