Because our office moved (all space got rent), internet is no longer required. Right now, I do not have a use-case for these devices (although, it was pretty cool, and I wish I could keep using them somehow).
For the past 10 months, except for some water in the UTP cable, this has been working perfectly, with a good and stable ping.
While I used them for Point-to-Point WiFi, they can be used in a wide variety of modes, including regular AP, etc. Just remember, they run at 5Ghz.
Invoice is possible.