Here a link to a Smart Key for several Nissan car models which operate on 433.92 MHz frequency, incl. Nissan Micra K13.Do you have a link to a good aliexpress seller for them?
I completely understand your view but I am a regular buyer on AliExpress, from India and my success rate in receiving the ordered products as advertised so far has been impressive.There's a lot of poor rip off copy stuff on aliexpress, hence why asking for a known good, tried and tested supplier
As I have not bought it myself, I don't know much about those things but if I needed a duplicate / spare smart key and if someone were to offer one which works at that price, I'd try it.Those ones you linked to all state needs to be coded by an autolocksmith, so no better than what we have available in the UK.