recording net or gross check

We use an online registration company that processes member registrations for events. In addition to processing the registration, the company processes the payment for the registration if its to be paid by credit card. When this company sends us a check for the registrations received for the month - they debit out the credit card fees and registration fees... The question is - do I record the gross amount of the check into qb or the net amount -- which is acually what was received...For instance: we process $2000 in registration incomeThe online company takes $150 for processing the registrations and $200 for credit card fees and sends us a check for the net amount of $1650. How do I record this in QB? Help is appreciated!