Develop building land. Profitability test for beginners?

We have a developed PURCHASE price of €105/sqm, and that is the more expensive part of the area, and not far from here an area is being sold for €26.50. So it must be possible to go cheaper.

You are absolutely right, I just checked the purchase contract again.
I had a transposition error.

It was actually only about €100 per sqm.
Basically, the municipalities are also rigid and economically not performant.