Yeah, you know over at Lake Hylia in the new game: that little house just off the bridge road, with the fabyooooolus clown-dude who charges you 20 rupees to grab a chicken and soar down to the lake. I have fun wasting time there. :)

Poor chickens, though. :(

But yeah, rupees = real money! Like, every time I find a penny, it's like finding a green rupee.
Cha-ching!