Insidious i think you should write a price guide for us to use. This is because there is a lot of confusion on what is priced at what. And it gets really annoying (well for me at least) when I or another player are trying to sell something, and someone comes up with an offer of a ton of different items, that have no exact street price.
The only problem I can see about this, is that we haven't truly built up our economy yet, but prices can be updated.
(I say we haven't truly built up our economy yet because we don't have things like rares spread out, either one player is really really rich, or really really poor nowadays. Well, according to what i have been seeing, that is. Only a few people are in the middle.)