$100 buys me about a week's worth of groceries if I don't also buy stuff for the house like cleaning supplies or something like that.
It's a bit over two tanks of gas for my car these days.
It's 80% of what a good quarter of weed costs.
It's two month's worth medication that I need to take.
It's one visit to the dentist to have my teeth cleaned.
It's three cuts of my grass by my yard guy or two trims of my hedges.
It's only a fraction of the taxes that I pay each week for the privilege of living in America. (yes I was born here)
It's less then what it costs to have a local hooker come to your home here. (no I don't call hookers but my neighbor does and I'm friends with more then a few)
$100 is about the same buying power as $20 was when I was a teenager. (I'm middle age now)
$100 would be about the least amount of money that I would want to carry if I was going someplace to do something for the evening. (not that I even use cash anymore)