I like the houses you mentioned here, some of them have their own private forest.
The only thing I'm not clear about is the price. One really stands out in terms of price (and I'm saying, it's much cheaper than the others). Is it possible for your brother to look at properties with such price differences (2.5x)?
The price on the one he offered on today is over &1.1 million Australian dollars, about $680,000 Euro, so slightly above the average house price here in Australia. ($960,000 AUD)
He's been looking at properties at different price ranges because each will work for him depending on other factors - it's all a compromise. Ideally he's in the $1m+ range as that's the property he needs and wants (features/land/location), but he would look at the lesser priced ones and make compromises on his needs if that's required. I'm hoping he gets the one he offered on today.