I agree they are pretty. But the price is just too much, ya know?
My understanding is that the electric kettle also has a port coming out the bottom, which leads to a pump, which moves the wort back to the top of the kettle. That way the wort is always moving and thus doesn't stay near the heating element too long and can't get scorched.
I have also seen some get ups that would pump steam/boiling water through an immersion coil, transferring the heat a la a HERMS coil.
I like the idea of circulating the wort but I am in the thralls of redesigning my current kettle into a strike/sparge heater and pumping that water to either the MT or the HLT. It will help me not have to lift a hot kettle that is heavy, I have various burns on my forearms from accidental slips.
In the future I am sure I will experiment with moving the wort around while using the heating element. I get bored if I don't make upgrades for too long