I have been running proper businesses in Europe and Asia for over 40 years. Here is an example what is need to setup a proper (US) business. NOT doing some online transactions and calling it a business. https://www.sba.gov/business-guide/10-steps-start-your-business
Selling a website gives the buyer nothing special. One could start another website and keep doing the same thing again.
A business has a legal framework, is registered in a country as a business with shareholders, VAT number, ........
Doesn't look like you have a business just a couple of websites selling things.