Not sure it's a part of the Frenzy sale, but that's a historically low price on this Huawei router. What's make it pretty interesting is its seamless support for G.hn for backhaul connection between individual stations. Reviews are rare but positive.
I currently use Tenda MW5c-3 in bridge mode (i.e., as a mesh of dumb WiFi access points) and it works quite well. But as a home networking enthusiast, I couldn't help myself and pulled the trigger on this one, just to try it out at the very least 😎