Sohna: Plot vs luxury floor, my cost confusion

Honestly, I work in real estate, but buying for myself in Sohna is giving me actual headaches. I'm trying to compare NKV Plots, jo ₹7.5L-₹15L mein hain, and Sunder Homes Luxury Floors Nirwana Country, which is a completed project at ₹3.5Cr. The price difference is massive, but I'm trying to figure out the *real* total cost of ownership. Plots pe you have to build, right? Toh construction cost, approvals, timeline ka poora headache. Sunder Homes is ready, EMI starts but you're done. For a family moving in, which makes more sense long-term, considering all the hidden charges beyond just the property price? Builder ka track record bhi matter karta hai. What's the real ground reality for both in terms of hidden costs and future appreciation?