However I am contemplating the change to VDSL, when I look around almost all ISP's charge $10 more for VDSL
as I understand it that is to cover the cost of the master splitter of witch i already have. however Orcon charge $15 extra....

Is there any option as a existing customer to forgo the master splitter install, use my own vdsl compatible modem and not get charged the extra $15?