Thank you for your input. The trip planning was one of the use cases. The thing is that it doesn't really matter what kind of price review is that since I'm not limiting the users in what they can post (obviously because I don't know what other people are looking for to buy). Maybe it's even a short term offer that will expire in a week and nobody will be able to leverage it. But that's fine because people will get an _overview_ of how much things can cost in that area (someone will make a conclusion that since there was such a good offer, maybe there are other good offers that are simply not listed on PriceFlurry).
