It's not bad at all, very good value and unlimited
I have been using it in London EC1 and for £20 a month is good value. UNLIMITED.
Speed 50mbs down 10 up. In some busy times (here that is during the day) it can now fall to 7.4mbs down 1.2mbs up..... still faster than I can get with Sky/BT locally!
Designed to be a consumer white good, plug and play the call centre is annoying when talking to the about NAT etc. Their response is if it is not doing what you want send it back and cancel contract.
My experience with it is here https://bulger.co.uk/blogs/
Shame if they go down. It is a very good idea, implementation poor with no information as to what it is. The base product cannot be called home broadband without wires. Once set up in right area is is remarkable value.