I purchased mine from China with English version and with shipping paid less than $500.00 total. It is giving some problems but I suspect with the learning curve of these cams along with
Blue Iris it may take a little bit of time to become totally proficient . (But I'm working on it with the help of another individual who has made my life enjoyable. Knows BI inside and out). Good luck.
Occasionally my cams locks in a 90 degree position and stay there for a couple to several hours. After at least three hours they return to a reset position and presets and other functions perform as expected. It seems it has a mind of its own when they both decide to lock downward. Unable to determine what makes either cam software or BI software make the cam do this. Tried the washer between the plate thing and didn't seem to work.
Recorded times of day/night this does the lockdown thing, but as of yet, no pattern is emerging. Anyone else have this problem?