Approximate Business Valuation

Hi, I am urgently looking for a very basic valuation on an established business selling digital products globally (via Shopify) in a niche market. I am really only needing a very basic assessment i.e. an approximate value so I can decide whether to look more closely at buying the business. I tried to do this myself using business valuation tools online, but they all came up with different answers. I have some basic information re sales, expenses etc. and number of social media followers etc. If interested, please let me know your qualification to provide the assessment, what information you would require, when you would be able to provide it, and how much you charge. Please note, I must have assurance of 100% confidentiality. Thank you very much :-)