A friend of mine has an angelcare one (sensor and sound no video). Its brand new she said because she got 2. the original price is 550 i think. Let me know if you're interested and i'll find out how much she'll sell for.
I have the angelcare with video. Its very nice except in our old villa with thick walls it doesn't necessarily have the range i'd like. Thought of changing it but didn't in the end on the advice of the ladies on here. So i now leave it in the passageway because it won't come all the way to the living room from her room upstairs on the other side.
A lot of other good reviews on here though. And the sensor does offer peace of mind!