Take on the fruit stand

I love the fruit stands in NYC even though they wildly overcharge for
basic fruits. You can get two bananas for a dollar, three peaches
for $2 or a bag of grapes for a ten spot. Now, this isn't the end of
the world and not exactly criminal because I am literally looking for
one or two pieces as opposed to getting a garbage bag full at costco
But what always bothered me is that these guys won't let you buy a
single banana if you have a bill bigger than a single. I guess it is
not worth their trouble to break a bigger bill for a $0.50 purchase
but if seems to me they if you are adding a 90% markup you could at
least be accommodating