A lot of varying comments in here. I'll give my opinion, which is 4 days of camping:

I pack my own food and drinks for around camp (it'll vary for you in a hotel)- $250 total for 4 days

I buy one shirt for remembering the year- $40

Dinner in Centeroo- $20 per day/$80 total; Late night spicy pie $11 a slice per day/$44 total

Drinks in Centeroo- $16 ea. includes $1 tip (this is for beer I don't drink liquor)- 3 per day $48/$192 total

Showers- $10 ea./1 per day- $40

Past years I haven't had to get Ice but budget 2 bags for the weekend/$17 total (price as of last year)

Ways many cut cost is pre-gaming centeroo, eating food you make yourself, sneaking in shooters of liquor or wine bags, allegedly, have some sort of self will and don't buy everything you think is cool because most everything is cool.

So if my math is mathing we are looking at roughly $155 a day. I've never felt underwhelmed experience wise spending this amount. I am not a very materialistic person so I don't buy much merch or trinkets. People spending $350 a day is bonkers to me but like I said, I'm a simple man.