This largely depends on the licensor's settings. If he has activated a review step - meaning he gets to review your request - you can add a message to your request before sending it off. The licensor can then send you an amended price offer after review.
If the licensor chose to completely automate a deal then you cannot negotiate the price. You can do one of the following two things:
- Accept the price, license agreement and terms and conditions displayed and a contract and invoice will be generated for you.
- You cancel the current request and send a direct message to the licensor via Frankfurt Rights.