Excel Spreadsheet

So, I got bored and decided to make a little Excel spreadsheet for fitting the most weight into the most space possible for maximum profits. Got most of it done, and you should be able to at least compare the potential profits of two different products. Only I gave up when I found that I didn't know Excel well enough to get the spreadsheet to be able to give you the best combination of items. If anyone wants to give it a try, go ahead xD

https://docs.google.com/spreadsheet/ccc?key=0AppleNEiBSjvdERoYnZhNHYtVGxFREZyWVNiVkpPeHc#gid=0

Just put in the expected profits in the "profit" section and whatever amount of goods you can carry in the "quantity" section.