At the price point it's not much better than a normal rims tube at an increase in cost... functionally. It looks nice, but I wouldn't really consider buying one over a rims tube unless I can find out more details on how much the element cost. I also can't seem to find a shot of the RTD probe placement, if it's replaceable or not.
It kind of sounds like it's "in the base"... and if it's all in one and a replacement is another few hundred bucks that's probably out of the question for most homebrewers.
I like the idea of it... the element is nice, but what happens when i burn that thing out by accident. Prob better suited to the prof setups, i'll stick to my $20-30 element replacement cost.