Thank you for reaching out to the Community!
There are 2 price options for advertising on Facebook, and they are based on the number of unique people you're trying to reach. You can reach 10,000 people for $100 or you can reach 25,000 people for $250. That said, if you have additional questions about Facebook advertising then please reach out to our Facebook support team. They can be reached at 855-816-6502.
Thanks and have a great weekend!