I got one of those, too, because we had low pressure. It worked fine but was noisy as hell.
Aye. Unfortunately your words of solace ring a bit hollow because my learning experience only confirmed what I already suspected.
In retrospect, I should have spent the money on AA batteries and then hawked them on the streetcorner.
Man, you guys have it easier than my uncle, who got a $10,000 gift certificate to the Sharper Image as a work bonus during the dot com days.