Slightly cheaper if purchased through the App.
You can also get the Lii-500 with power adapter for a few dollars more. I suggest purchasing one with an AU plug from eBay/AliExpress so no need to use a converter for the EU or US plug. The power adapter should have the following specs DC 12V 2A with positive polarity tip (5.5 x 2.1MM).
Check lygte-info.dkReview for specs and features.
Thanks OP, been waiting ages for a good price on these!