The price of land varies greatly, especially for smaller plots, however as a basic guide:
- Crop fields - €3K+ per hectare (terre has a subsidy at the moment for farmers who crop specific crops. This makes this land much harder to get).
- Grassland - €2-3K per hectare
- Woodland - €1-2K per hectare
Keep in mind that the class of land is fixed but the use isn't so you can plant trees on crop-land and vice-versa if you wish but the subsidy, insurance and taxes are charged on the class of land.
Don't forget to budget €500 ish for the notaires fees.
Small plots, especially in villages will be much more per meter than larger plots out of town and anything that might have (or expect to have planning permission - especially around Guéret - will be far more expensive). A neighbour recently paid €350 for about 0.1 hectares of scrubby grassland (plus fees).
These prices are for the Creuse (far far cheaper than other departments) - you might be looking at double or triple in some other departments.