Hi, for e-commerce websites you would need the UltimateWB Full version, to include the e-commerce app features. You can either buy the software ( https://www.ultimatewb.com/buy ) or use it on the UltimateWB Cloud ( https://www.ultimatewb.com/cloud-website-builder ) . Please check the price list there.

You do also need a domain name and web hosting, which you can also get at UltimateWB: https://www.ultimatewb.com/domain-names-web-hosting 

You can also choose to get your domain name and web hosting at another company, just make sure the server satisfies the server requirements: https://www.ultimatewb.com/server-requirements 

Regarding SEO, we do have this blog post, "What are the steps to do an e-commerce website SEO?"

You can find more of our blog posts on e-commerce websites here: https://www.ultimatewb.com/blog/category/e-commerce/ 

Hope this helps! Please feel free to let us know if you have any further questions.

Best,

David