Yes! If you offer additional offerings such as cost of materials, books, content, please make it clear to your clients that you offer extra ad-ons in your listing.You can mention this in the description, equipment offered or equipment required fields in your listing.
Please be sure to make it clear regarding what the cost of the session covers so that your client isn't shocked by any added costs.
If you have any questions, ideas on how we make your experience better, or simply just to connect with us, contact us at email@example.com. We're happy to listen and help!