This depends solely on how much you would like us to do for you.
If you hire us to do one or two posts a week, the costs are low. If you want many more per week, and across variable channels, then it will begin to increase pricing.
The best thing is if you get in touch with us, and we arrange a meeting to go through what channels you have, we can come up with a formal proposal for you. We can also create proposals based on your own budget as well.