Yes, it's international. And yes, you're correct about how it's similar to Milo. But I believe that putting prices closer to actual consumers (and not proposing them through retailers which often can be just a paid marketing campaign and the prices are not necessarily the "best") via letting them collaborate on posting this kind of information will essentially create a better overview of "how much" and will give consumers a better choice. I like telling people that PriceFlurry is like Wikipedia for prices (in regards to the concept). Don't laugh :-)
Btw, I know it's empty but if you want to see how the search works and how the result page looks like (if you don't feel like you want to post something), try specifying "Aarhus, Denmark" (the place where I currently live) as an address and setting a price range from $1, you'll get some results.
Sorry, got it wrong :-) That's the way it works - you type in an address which becomes a search center. You can bring up a map (an icon on the right) and specify the search area (by changing the radius) but the address will always be precise.
Looks like this is a crowdsourced Milo. Is that accurate?