Construction-linked plans are always a trap, right?

Honestly, I'm completely lost with all these payment plans and Gurugram real estate pricing. Family badh rahi hai, so we need a 3BHK, maybe around Sector 52 or Golf Course Extension. My budget is around ₹2.5 Cr for a decent flat. Builders like Pyramid Infratech have schemes, but I'm confused between construction-linked payment plans (CLP) and paying more upfront. CLP mein interest kaafi lag jaata hai, but down payment mein itna cash ek saath nikalna mushkil hai. Kya better option hai, especially for a property jo 2-3 saal mein ready hogi? And pre-launch offers, are they really worth it? Builders bolte hain ki bahut discount milta hai, but later prices utne hi ho jaate hain ya even kam. Kya yeh bas marketing gimmick hai? Ya sahi mein early-bird advantage hota hai? Kisi ko experience hai ki pre-launch mein buy karke actually save kiya ho? Ya final price almost same hi rehti hai?