Maintenance cost trap: What to ask beyond per sqft rate

Did anyone else realize how much maintenance charges can inflate *after* possession, even for Godrej Astra? We're downsizing, kids have moved out, so looking for something manageable, but this maintenance math is confusing. Builders initially quote a per sqft rate, but I've found ki usme bohot hidden costs hote hain. Like, separate charges for clubhouse use, parking, or even a 'sinking fund' jo pehle batate nahi hain. Isse toh mera low maintenance cost ka budget bigad jaata hai. What's the real scene with Godrej Astra's maintenance? Does it actually cover everything, ya phir extra kharche nikalte rehte hain? Aur parking allocation ka bhi kya scene hai, lottery ya reserved? I'm trying to figure out if it's genuinely value for money for an empty nester like me. Hope someone has some insider info on this.