Some folks commented that today even Christian and Muslim wedding are also expensive like Sanatan wedding

Well if you see from total ball mark expense point of view, you are right but if you see from Economic inclusion point of view then Sanatan weddings are on top since the spending is widely spread out unlike Christian, Muslim or ther religion wedding

A religion wedding is always a close and limited in spread

but a Dharmic wedding is widely spread out outside Bride and Groom family

Sanatan wedding is always an Institution where as Christian and Muslim wedding by nature of religion is a contract between 2 parties

To understand this one should have knowledge about the difference between Dharm and Religion

Think why DIVORCE don't have any Hindi or Sanskrit work. Talaq is urdu word
Dr G P