Palm Grande maintenance costs are a bait-and-switch.

My existing house resale is almost done, and now I'm just trying to finalise our move into Palm Grande Exclusive Villas. I specifically looked for low maintenance, thinking it would be manageable after our big house. But the quoted maintenance charges for the villas seem to have suddenly jumped. Builders promised one thing during booking, and now it's totally different. Is this normal? It just feels like a bait-and-switch. Did anyone else face this with Palm Grande, or is it just me? What did you do?