€150 is a lot of money for a keyboard...
But hey, there isn't an alternative, so maybe I'll pay it. But....
For that price I want to be 100% sure it's good.
I want to try it, keys have to work flawless. No double presses, no multikey presses because of the design of the keys (small, middle of key has to be higher, as on N900).
Design doesn't have to be top-notch, but it should look like a normal keyboard. Not like this one:

Why not: black board in white plastic. Can be done better. It looks DIY, not €150. Metal hinges visible. Could house a bigger board (or in such a way the camera is always unobstructed).

For €150 I also don't expect "mickey-mouse"-solutions. It doesn't need a lot of extra power, it works (no instability issues) and no switching on/waiting things. I think it's ok to switch it on, but then it needs to work right away.

That's my cup of tea. I want to pay that much for it, but it should be worth the price. And: a minimum of 2 years normal guarantee.