I live in an old Victorian terrace and my daughter struggles to get wifi in her back bedroom even using a plug in extender. I was looking at buying Complete Wifi outright at BT shop for £200, however, looking at upgrades it would only cost me an additional £2/month to go to Superfast Fibre 2, but not sure if this includes Complete Wifi or not. Any help or advice appreciated as I'm so confused with the different options.
Just changing to a different broadband package with a higher speed won't help the wifi signal.
You would need to consider a package with "Complete wifi" included which works out at about £10 per month more than a package without it.
See link. Click the button to add the "complete wifi" price.
https://www.bt.com/broadband/deals
You will probably find that the package you are on s OK as regards the speed you need so go for the same package and look at the price when you add "Complete Wifi".
Yes, I'm fine with my speed but I can't seem to find an option to just add Complete Wifi to my current contract. The other alternative I was thinking was to buy outright but not sure if there is any benefit to this as not sure the equipment would be any use with another provider.
You could try the options team on 0800800030 and see what offer they will give you to add complete wifi. They are UK based