There is no definitive answer to this question, as there are a number of Shopify sellers with a variety of revenue streams. However, one possible candidate for the title of "richest Shopify seller" is internet entrepreneur, Gary Vaynerchuk.
Gary Vaynerchuk is the founder and CEO of VaynerMedia, a full-service digital agency, and he is also a prolific investor and venture capitalist. He is thought to be worth roughly $160 million, and a large chunk of his wealth is likely derived from his Shopify businesses.
In addition to Vaynerchuk, there are a number of other Shopify sellers who could potentially be considered the richest. For example,MakeUseOf.com founder Oliver Bridge is thought to be worth around $120 million, and much of his wealth is also derived from his Shopify businesses.
So, while there is no definite answer to the question of who is the richest Shopify seller, Gary Vaynerchuk and Oliver Bridge are two possible candidates.