Just got possession, stamp duty costs hit hard

Just got possession of my 2BHK near Kalawad Road last month, and honestly, the stamp duty and registration charges were a massive shock. Builders don't really highlight how much these add up. My ₹65L flat ended up costing way more after these. Feels like a hidden charge, almost 7-8% on top. Did anyone else feel blindsided by this in Rajkot? Is there any way to plan for these better, or reduce them?