Land too expensive for the total cost framework?

We pay 499€/sqm for a municipally owned plot in the NBG in the north of Ba-Wü between Heidelberg and Mannheim.

Thank you for the answers! The property (more precisely, it is two adjacent properties) is located in Bad Salzdetfurth. 40€ per sqm, a total of just under 3000sqm

Thanks for the answers!
The plot of land (more precisely, there are two adjacent plots) is located in Bad Salzdetfurth. €40 per sqm, a total of almost 3000 sqm

Then Scout's assessment fits well, as does my own.
Below-average average income, below-average purchasing power, and declining population numbers for almost 20 years. No major employer in the associated towns. With €34 per sqm, new residents are supposed to be attracted who also like to commute to employers but want to live cheaply.

P.S. I don't want to badmouth your place, just state that the prices there are exactly appropriate.

Then the community must be economically and demographically pretty much on the decline. It probably bought farmland for almost nothing and just added the development costs, then it can also resell the land at such a price in the hope of attracting economically potent families and thus either young new citizens or keeping "young old" citizens in the village and thereby counteracting its decline. Suburbs of Gießen or Wiesbaden certainly don’t need something like that.

No. In fact, the area here is well equipped with employers etc. for rural living and many who leave for studies/training come back later etc. We bought a building gap from acquaintances, which is located in a new development area from the 70s... back then there was no building obligation and so individual plots are still owned by families who just bought them back then as a precaution. Our sellers bought the plot from an old man who no longer wanted to take care of it. They have 2 sons about my age. Both live (one with his wife) in the village but neither wants to build, so they didn’t need it anymore. In new development areas, the prices in neighboring towns are between 45-50€ and the standard land values have been steadily rising for years. The area here simply isn’t on anyone’s radar who isn’t from here or doesn’t know someone who lives/grew up here.

No. In fact, the area here is well equipped with employers etc. for rural life, and many who leave for studies/training later come back etc.

Nevertheless, the demographic and economic data are not good. That doesn't mean that one cannot live well there. But more people move away than move in. And the people who work there earn less than average. That is not bad either, since housing is also cheaper. The acquaintances are probably also glad to have gotten rid of the property. An empty plot only causes costs and no one can hope for large price increases there.

Nevertheless, the demographic and economic data are not good. That doesn’t mean you can’t live well there. But more people are moving away than moving in. And the people who work there earn less than average. That’s not a problem either, since housing is also cheaper.
Probably the acquaintances are also glad to have gotten rid of the property. An empty plot only causes costs and no one can hope for significant price increases there.

Where do you actually get this information from? Where do you get the average income from here when I didn’t even name a place?
Our acquaintances didn’t necessarily want to get rid of the property. In fact, they didn’t advertise it anywhere and still received various purchase inquiries, where people would have paid significantly more than the mentioned 34€/sqm... but they were happy that we wanted to move there and that they could support us in that way