I recently bought a new WiFi router since my previous one got somewhat unstable after a firmware update and I realized it was about 8 years old at that point.
The old one was a decent model at the time and the new one was hardly high-end. We have a 3000+ square foot house with two stories, and the router is in an upstairs corner. At the opposite downstairs corner (as far and as many walls as you can get away from the router), speeds were single Mbps or failure to connect at all with the old router.
The new one gets 150Mbps in that corner, and almost everywhere else it gets the full 300Mbps that our cable downlink is, so I’d have to find a way other than fast.com to measure it (if I cared, which I don’t because for anything WiFi related 300Mbps is plenty fast for a while).
If you use WiFi and haven’t upgraded recently, it might be very worth it.