I ask due to a mixture of doubt, but also curiosity: Can you point to areas with prices in the 100Euro/m² range? For a house that's suited for living, and not destruction? My grandma's house might sell for that range (~200 Euro/m²), but it has 120m², was built at or before 1900 (as a poor farmers house) and there have been no meaningful improvements since the 1970s. So, as sad as it is: Best thing one can do is scap the house and build a new one. But then it's cheaper/easier to just buy some empty land.
That town is pretty much "Arsch der Welt", though they now have 50MBit/s internet since a few years. Next city (a small Kreisstadt) has multiple super markets and is 20km away. Mobile reception in the town is okay, I think they just skipped 3G for a decade and now partially swap 2G for LTE. Public transport to/from the Gymnasium [45m bus drive] is three times a day: Going there in the morning, and returning for 13 and 18 o'clock (so pupils can get to and from school for both the regular 6 lesson days and the longer 10 lesson days). For anything else you need a car; an electric car might work, since for most interesting hacker jobs you only need a total range of maybe 150km per day (outliers in both directions apply). OTOH, even if people might seem a bit skeptical of newcomers at first, they turn out to be super friendly. After all, it's easy to know everyone by name if you're just 250 people.
Where I live (Saarland) the "Bodenrichtwert"[0] alone is usually between 80 and 120 Euro for the "affordable" areas I looked at. So little chance getting more than a ruin for 100 Euro/m².
[0] For non-Germans: The "Bodenrichtwert" is the average price per m² of "raw land", that is, excluding improvements like houses. It is updated every 2 years to include recent sales in an area.