I got one. It works fine, can be set in increments of 10C with presets of 200, 300, 400. It displays the current temp rather than the set point, which is a plus. For what it is it's remarkably cheap.

But...
The tips are oddly shaped for electronic work. They work though.
The sponge is maybe 2mm thick, and the sponge holder similar, so that feature is fairly hopeless.
FWLIW there are 2 solder reels that can sit on the base unit - they're tiny.
But the no 1 limitation is that the bits screw into place, they're threaded. So there appears to be zero hope of it lasting decades.


NT