I haven't seen anything like this anywhere, and I like being able to see what I could potentially make when messing around with the market, so I threw this spreadsheet together to give me a rough idea of what kind of profit I can stand to make for any item.
Some numbers it calculates and displays for you:
Total order cost
Transaction fees for sell order
Broker fees for each order
-> Includes taking Broker Relations and both Corporation and Faction standings into account
Profit for each buy / sell order combination
Profit percentage of cost for each complete order flip
Total investment amount
Total sell order income
Total profit percentage of all orders
Approximate isk / hour for sell orders based on average daily volume
Latest version: 1.08
Last update: 29 May 2009EVE Online Projected Profit Workbook
Slated for future release is an application that does everything the spreadsheet does, but then takes the projected profits for items you've entered and compares it against your actual profit through the use of the API. Coming Soonฎ!
Comments, criticism, and suggestions are all welcome.