However that is for just one passive fund, and Evestor doesn't offer its investors the opportunity to just buy one fund.
St James’s Place also expressed concern about whether the data is comparing similar product offerings in the appropriate way.
A spokesperson for St James's Place said: “When assessing the cost of investing it’s crucial to compare like-for-like services so consumers are not misled about fees and charges.
"Our charges encompass holistic financial planning, rather than just investment advice, for example.
"This is an important distinction. We believe in clarity for every client and are always up front about the total costs involved.”