Ordered last Wednesday, shipped on Friday and delivered this morning, all the way from China. I wasn't expecting that at all, given they'd said 3 - 5 weeks for shipping! Also seem to have got lucky as I didn't get hit with any import duties or VAT.
I only went for the WiFi gateway and a handful of soil sensors at the moment, but am planning to replace a whole bunch of Oregon Scientific stuff in the next few months assuming the ecowitt setup proves robust!
The original developer has left the HE platform and the Community, but he has left the code for the rest of us to use. I have been in contact with him and taken a copy that I am planning to get back in to Hubitat Package Manager soon. If you need a copy, they are located here.