Here's an interesting experiment. This website is trying to use Flickr to explore the relative value of $5 around the world. They're asking you to take pictures of things that cost 5 bucks and submit them to their Flickr pool, (or email them).

"The thing can be an object: a book; a bag of grain; phone credit or a service: vaccination; hair cut; dentist check-up; charity donation; taxi ride; massage - the more variety the better."

They already have some interesting examples, a lamp made from recycled parts, delivery service in South Korea, two cans of soup, etc.

What can you buy for five dollars?

[via Kottke]