The VE300 $139 is the one I'm looking at.
From the specs, I don't know if the alarm is optional (I don't like electronic alarms), and even for that price, you only get one set of temps to work with. I'll have to buy another if I get a second, different type of snake, with other temp requirements.

VE-300 Yes Yes-Pulse Yes-Built In Yes Yes Single 700 Watts