As of Jan/Feb 2018 Idnet informed me that....
"This service has not yet been released as a product as yet, as such there is not yet a pricing structure in place for it. As soon as the service has been released, details along with pricing will be available on our website. We do not yet have an ETA, I'm afraid."
My cabinet had gone live and was showing on the DSL checker at that time, as far as I am aware the situation hasn't changed and I left in mid March and moved to BT on the Ultrafast 2 product (install was delayed by myself to fit in with other plans).