Think of it this way: Charging them money helps them too. Imagine you buy a course for $200 vs $0. If you pay $0 you may not finish it, or value it. You might

Think of it this way: Charging them money helps them too. Imagine you buy a course for $200 vs $0. If you pay $0 you may not finish it, or value it. You might resent the time going into it etc. If you pay $200 you are motivated and will finish it and learn it. If you do hours of work for $0, then you are too busy to engage further, they are now stuck having to pay someone else. And they hadn't budgeted for that. If you charge, they already have a plan in mind, a budget they can switch to someone else later if needed - if you no longer want to work on it or need a break.