Can we really negotiate prices with builders in Rajkot?

Does anyone actually manage to negotiate builder prices in Rajkot, ya phir sab fixed hota hai? I'm looking at a 2 BHK in Krishna Kunj, maybe even Ansal API projects. Builder bol rahe hain ki rates are non-negotiable. Friends say kuch toh kam hota hai. Honestly, lagta hai first-time buyers ko bas chipka dete hain. Should I push harder, or is it a waste of time? Meri budget tight hai, toh har lakh matters. Everyone says negotiate, but how? Change my mind if I'm wrong.