This depends on the size of the project. For a small project, I've charged $100 for a logo. For a larger rebrand project, I go by an hourly rate of $25/hour
Whether it's a one off design or more, I'd love to help out with your social media graphics. We can work out a price that works for both of us.
Similar to a logo design, for a larger poster project, I'd charge $25/hour. For a shorter poster project, $75 per poster or whatever is fair for both of us.