Home / Can I pay for the training by invoice? Can I pay for the training by invoice? Yes. We use Eventbrite as our booking system. On the order page there is a drop down box on the payment method, where you can select pay by invoice. The invoice will then be sent separately. Alternatively, please contact monica.gameiro@sgsa.org.uk or andrea.jones@sgsa.org.uk and we’ll send an invoice through directly.