Engineered hardwood flooring over radient heat costs per sq meter

I'm wondering if someone has a ballpark idea what the usual cost of installing/finished (lets says oak) flooring is over a radiant floor heating system? Just a usual cost per sq meter here in northern Switzerland would be nice to have. These are usually the engineered types of floors, which are laminated to a base of special plywood making it suitable for underfloor heating.

I'm talking about the real wood, not the fake laminate stuff now. See my attached example of what I mean.

I know, the price can range greatly from wood type, installer, etc.