GF has fixed Telstra bigpond internet connection.
Think 200gb package with her phone and mobile.
I dont have internet at home, rather just my mobile data package.
So, at her house I've bought a Netflix subscription, recently a getflix subscription.
The router is a Telstra Thomson TG782. Apparently we can't change the DNS settings and the router often drops in and out.
We connect 2 laptops, iPad, tablet, 3 mobiles, basic home printer and chromecast to the home Wi-Fi.
So, to replace the router, what am I looking for? How much do I need to spend? What's the recommendations please?
That's an ADSL modem. Which is also happens to be a router. So it's a combination of both an ADSL2+ modem and a router, which is what most ADSL modems would be nowadays (it is rare to find an ADSL modem that doesn't have a router function)
The TP Link Archer D9 is one of the best routers around, for $199 shipped it's a great value router for any kind of user — both basic and advanced. Regularly sold at $240+, if you can buy this at $199 it's a very good deal.
https://www.ozbargain.com.au/node/222213
The cheaper alternative to that is the Archer D7, which is functionally very similar to the D9 but with a few features removed (namely, USB3.0 port), and is still a very good option for most. This sells for $150 usually and if you paid anything less than $130 you're getting a very good price. Last went on sale one day ago (you missed out.)
https://www.ozbargain.com.au/node/221366
The Billion 7800NL is also another hot seller, and although it has been out for some time and could be considered on the brink of obsolescence, it is very affordable at around $105 AUD (this is the normal price). The cheapest place to get this is from here for $89 and the shipping is free! The main downside is that this device is in fact quite basic — and doesn't have USB ports or Gigabit LAN.
The 7800NL has a bigger brother called the 7800NXL ($130 AUD) which has a USB port for you to stick USB devices into to share storage, printers and even a 3G networking dongle in case you want backup internet access when your ADSL fails. It also has Gigabit LAN which is a neccessity if you have any Ethernet connected devices. But if you're going to get this, it's much better to pay extra for the ARcher D7 instead.