Is wifi expensive

Yes and no,it really depends what your looking for. If you want,(I strongly recommend) that you get a good router that has 6 devices minimum,so it doesn't disconnect every second,or if your friends come over want to use it. My router was 75$ and it works fine. If you don't want one provided from a company, such as AT&T, get a netgear dual band router. But AT&T has a selection. If you think your paying too much,you can cancel it. But it is worth it most of the time.