The most impoortant thing about the humanity loss is that it is a random number ranging between number of dice and number of dice x type of dice. I think to remember having seen some cyber kit loosing you as much as 4xD10...but don't remember what it was. And the nice thing is, the game does not need to show the loss range of any product. Any reliable wiki on that would have to come from hackers or from the makers themselves.
Add to that the little idea of never showing your humanity or EMP and the fact that many of the most costly implants are useless cosmetics...if it is not indicated in the shopwindow or advertizement, who would have thought how psycho you can go from that glow-in-the-dark tattoo?
Like I've said before, that's just senseless. Nobody ever went insane from a dyejob. Purely-cosmetic implants like glowtats and colorshifting hair shouldn't have a Humanity cost.