Prices in Jade Villa and Greenfield Villa

We have always lived on HK Island (because of the kids' school) but love Sai Kung.

We would like to buy a property there as an investment and would rent it out until the children are big enough to travel everyday to their school.

We have seen some very beautiful village houses in Jade Villa and Greenfield Villa. They are very nicely renovated. The prices vary between 13 - 15m.

As we're not familiar with the property market in Sai Kung, could someone please give us an insight about these prices? Are they market prices or rather tend to be on the high side as we suspect? What range of rental price could one get from a nicely renovated village house in these 2 places?

Thanks in advance for any help!