Gaursons' hidden charges are a nightmare

Spent the whole Sunday checking out options in Noida Extension online. I'm based in Dubai, so site visits are tough. Yaar, I'm genuinely worried about hidden charges surfacing later. Builder brochures don't mention everything clearly. Are Gaursons or ACE Group known for this? Also, delivery delays are a huge concern for me, especially since I can't be there. What's their actual track record for 3BHKs near Yamuna Expressway? Should I even consider them?