As a matter of principle, I would never pay anything extra -- even $10 over the normal registration price -- for a domain name from one of those waste-of-oxygen domain squatters.
They need to go get a real job and stop leeching off humanity.
If people would stop "feeding" them they'd stop real quick.
...and that goes for anything else that people buy and sit on it waiting for it to increase in price and make a profit. Leeches, man! Leeches!
Don't feed the leeches! Best keep an eye on them, though.