Canberra only.
All the VDSL2 tiers (50/15, 100/25, 500/25) are discounted to $39.99 per month, for first 6 months. You will likely require a site visit by technician (typically free if they just need to perform line signal checks, possible fees if you need line work). The tech visit will also supply and 'install' a network termination device/unit. Your service is the ethernet out from that box, the network operator/s control the NTD.
The $39.99/mth includes their 500/25 plan, which generally appears (currently) to be without a speed limit profile (so you get max your line can support on g.Fast). The 2 wholesale plans on Vision network are 250/50 and 1Gbps/100 (max/max), so 🤷 what iinet plan down the track (with enough end-user data Vision and the VDSL2 retailers may reconfigure their product plans).
Formerly known as the TransACT network, it is now operated by Vision Networks, a wholly owned subsidiary of TPG iinet. There are a number of retail providers offering gFast services to customers via this network.
Please also consider supporting the team over at Infinite Networks, who provide an absolutely first class service and support on this same VDSL2 g.Fast network.
So I’m not familiar with the Transact/vision network being relatively new to the ACT. I’m currently on FTTN, iiNet website suggests VDSL is available at our address, any downsides to switching? Speeds available are much faster.