Builders hide so many costs, it's a joke.

Builders hide so many costs, it's a joke. I'm looking at upgrading from my 2BHK in Saidabad to a 3BHK, maybe Salarpuria Sattva. Base price kuch aur hota hai, then suddenly PLC, parking, interiors, electrical charges, OC fees, everything adds up. Feels like a proper scam sometimes. My budget is around ₹2Cr, but the final cost is always way higher. Kitna extra paisa lag jaata hai on top of the quoted price? Anyone faced this with Salarpuria Sattva? How much should I actually factor in for these hidden charges in Hyderabad?