4£ in Asda :)
Only if you place the extender next to the router would it connect at 300mbps which kind of defeats the object. Which is why I don't like them, because if you're placing it to fill a black spot, depending on how big the building is it's going to be half way between the router and the black spot if you can get power there, so you'll be getting 150mbps if you're lucky so you're then at 75mbps at the extender connections. If you're on 200mbps fibre then you're going to notice.
Only your internal transfer rate is halved, not your broadband bandwidth. Most routers and devices run at 300Mb/s on internal transfer rates. As long as your actual broadband bandwidth isn't higher than your internal bandwidth then you'll never experience a lower speed as a result of these and those who do.. don't need to worry because they still have 150Mb/s broadband speeds.
I didn't say they were useless, I said they halve the bandwidth. If you've got the throughput overhead to be able to loose then they're fine. I find it better to just use power lines and now my sky q is effectively mesh I have no dead spots.
Mesh IS the way forward, no argument on that at all... but for people to claim these are useless and not worth the cost is entirely untrue lol. They have their uses and when used correctly they do exactly what they're designed for. These are also significantly cheaper, which for some people is the only important factor.