RX-93 ν Gundam
(from Mobile Suit Gundam: Char's Counterattack)

This is a Fusion Works model, and it cost me S$24. (Yeah, I'm broke right now.) But the amount of sheer detail on this 10cm tall guy is really great. If I were to take a 100% crop of the photo, you would be able to see the sheer detail in the face itself. And the head of the model is merely 1 cm!