I bought one at $12.99, and don't regret it. It's not as good as Stone Age, Pillars, Agricola, Caylus, or AoE III... so okay, no wonder it didn't move... but it's still a decent worker placement game, so for someone who doesn't want to shell out for the aforementioned best in genre games, $10 is a great price for an interesting little game (although I will say that it really suffers with only 2 players).
I would put it on the level with Stone Age. It's basically the diceless version. $10 is an awesome price for a good-not-great game like this. (For those interested with space, it's the same size as games like Thurn & Taxis, Agricola, Vikings, Reef Encounter, etc)