That is a great deal. I'm considering getting one. I currently use a big old soldering gun with the fine tip.
As to ultrasonic cleaners, I have had one for years (almost 20 now). For those of us in the model train hobby, they come in handy for cleaning parts, but more so for painting or re-painting. Besides cleaning items, it also degreases well before you paint. The ultrasonic action gets into all hard to get to areas and unseen areas. Plus, it is not material sensitive, by that I mean you can put metals, plastics and even some other materials (glass) in it and it is safe to use.