For people trying to make the extra money on buying and sell how about a tab or something in the stations that you can look at to see whitch stations are selling and buying what for what costs? I think EVE has something like this !! dont know,, maybe it would work?

There is an "Items in Demand" news item at every station already, check that out.

or

There's this page:
http://vendetta.leechbak.nl/
But it doesn't have prices, that's the player skill part of the equation. YOU have to figure out which stations have good price on what.

Link taken from the vowiki:
http://www.vo-gate.com/mediawiki/index.php/Trading

The main reason the site doesn't have prices is because they fluctuate a LOT. A route that made you 300% profit one day might make 30% profit the next.