How much of an investment would a buying a piece of land be?

We are an NRI family of 3 in our 30s and recently a neighbor in our hometown put his plot up for sale. Our hometown is in a rural area - I mean we do get Amazon deliveries but no Swiggy or the likes! My husband's parents currently live there and it is their wish that we purchase that plot for our future. For some background, the plot is at a height from road level and does not have a decent road to access (cars can, but no trucks or buses can make the 90° turns), but the soil is rich and has plenty of water that my in law says will never dry up. We've had many discussions on the matter and my stand is that it may be a burden for us since any work on it may be quite difficult due to the lack of proper access and also would put us in a tight spot with our savings. My husband on the other hand says it's good to have some more land in our name, for krishi purposes or to sell it as plots. What are your opinions my fellow Keralites? I'm sorry I can't give out any more specifics!