I'm not an expert, but that link seems to agree with me (note we are talking about a transaction circa 2014).

> If your business has a physical presence, or “nexus”, in a state, you must collect applicable sales taxes from online customers in that state.

> If you do not have a physical presence, you generally do not have to collect sales tax for online sales. However, in June of 2018, the U.S. Supreme Court issued a ruling that will likely change this exemption to collecting sales tax.