Have a look at NFD: http://www.nfdcoin.com/

It's been around for a while, and its price - while very low - is surprisingly stable at 2 satoshis.

See for yourself: https://bter.com/trade/nfd_btc Just click the "Daily" chart tab and you'll see how stable it's been.

Check it out in the official BTT thread: https://bitcointalk.org/index.php?topic=603932.0

Its ecosystem isn't much at the moment, but it's a classic "sleeper." Low price, low market cap (100 BTC atm), stable, a dev team (incl. me) that sticks with it, and it's making its first steps towards real innovation. But its biggest selling point atm is the low price + price stability.