App development

Creation of an app that has the following features: An app that facilitates transactions between two users. User creates a profile as either a buyer or a seller via email and location. sellers post whenever they have a product available to sell. seller can set their own prices Available profiles are searched by location ( similar to tinder) Buyers can rate sellers products profiles can be saved in a favorites tab there has to be a reminders tab when and where transactions take place The app is cashless, everything is done through bank details ( in app purchases - similar to uber) the app makes money by charging a facilitation fee to the buyer and seller. a settings tab, here users can also switch between buyer or seller a potential expansion idea is that sellers can create events. I am honestly not sure what skills are required for this task, also not sure what price range such a project will be in.