I have two Z-Wave Aeotec Micro Dimmers available, model DSC19103 (921.42MHz - NZ frequency).  $30 ea. including shipping. RRP $110

 

 

 

More info: https://www.activeautomation.co.nz/micro-smart-energy-dimmer-module

 

 

 

Also have a few Aeon Labs touch switches that go with these dimmers if you're interested.