I have a 32" JVC 1080p TV I picked up secondhand from Gumtree (made in about 2009). Aside from a handful of channels that have switched to MPEG4 transmission, it still works OK.
Free to air TV is mostly only in SD here (and looks terrible on a large screen), and even Foxtel requires you to pay extra for HD channels (probably only 720p anyway). Kinda makes spending thousands on a giant 4K TV pointless, especially if one's internet would struggle with 4K Netflix.
These days one might as well just get a cheap TV for $300 and be done with it.