I can't list this on trademe as it has a 110v power supply even though I will supply it with a 230-110 step down transformer.
I have available for sale (local pickup preferred as the courier dropped the last one I sold and smashed the internals and keyboard) a SX64 complete with original keyboard cable and keyboard.
Last time I used it (about 2 years ago) all keys except the F4/F8 key worked although it now seems more don't work and the keyboard membrane may need re-cleaning/carboning. These are notorious for these keyboards failing due to the carbon used on the membrane. I adapted an empty c64c case and keyboard to plug into the 25pin plug (this isn't included).
The internal 1541 drive has been replaced with one that works (or did last year. I haven't tested since).
So one SX64 and step-down transformer are available for $800NZD plus freight if you choose at your cost and responsibility.
Pictures available herehttps://qq0u.app.link/e/3lYZLKUROS