@AAQ
No, prices don’t need to be controlled because some people want what is above their means.
People need to live within their means.
In the 1950s, my eldest brother had an over the top three day Bar Mitzvah celebration on a public holiday weekend. In many ways it was a celebration of my father’s business success not my brother.
It was soon followed by business reverses for my father, and my Bar Mitzvah consisted of a kiddish and luncheon for about 100 guests in the synagogue social hall. No night affair, no orchestra. I wasn’t scarred emotionally. It was what my parents could afford at the time without going into debt.
Every time we spend money we make choices and live with the consequences. If in fact the parents and chatan are working, as you post, and can’t afford to make the chasunah then instead of controlling prices we should examine their ability to earn, low salaries or perhaps their spending history that makes them unable to afford the prices.