Paid mentorship is non sense. It like hiring a prostitute to experience married life.
Mentorship works best when there is mutual benefit. You help your potential "mentor" first. That "mentor" is happy with you and rewards you with his "mentoring", in turn you help in more. Its best when there is a quid pro quo.
A good example is visiting a doctor, if you do not know him and you consulting is thru the "fees" paid. He will treat he symptoms and that's it. Whereas if you are a friend for him, where you can meet him/her at any time/ any place , and The doctor talks to you without expecting fees from you, that treatment will be different. The doctor will look beyond your symptoms, he will really think on figuring out what is ailing you.
These mentors in Topmate as the mentioning equivalent of Fin- influencers. Rembemer that Guy who come when you are watching youtube? he will each you how to make 1cr a year, help you buy your Ferrari? Its him equivalent.