Hello Reetika, Had you shared more specific details, that would have triggered more practical thoughts, from experts here.
Suggest you to try the following:
1. convince the landlord to understand your financial position and hence can bring down the selling price as much as possible, may not even possible to bring down exactly to the price in your mind.
2. Check for any premption opportunity, showing that you may be the first preferred buyer as that concerned piece of land is impacting your right to free air, light, water & pathway, etc... These kind of inputs may help you politely convince the landlord to consider your offer.
3. Try to get the advise of a legal expert near by to evaluate and see whether the landlord's demand for exorbitant price (way high compared to market price of the land) indirectly impacts any of your other fundamental rights, so that the expert can try for elucidating the landlord on the implicit consequences that you too may force of him....
4. Try to hop on to any specific acts, to peg a check to the landlord against his "dominant position" approaches...
Havins said these, always try to crack it psychologically with the landlord for early results... that would save time, while helping you relax from your present urgent need.