Please calculate the margin within the Hub like this: (sell rate-buy rate)/buy rate and not as a ratio of the selling rate. 15$ markup on a buy rate of 100$ should result in 15% margin and not 13.04%.
Downloading Buy and Sell information from the info panel only provides for PNG format. Give users the option to download to Excel or HTML with a disclaimer that once information is downloaded and changed, the source information is lost and Magaya ...
When adding a new charge, there is no field to allow users to define who would be charging them on the Buy side. Add field in the Info Panel to select one from the Address Book.
Convert Review Cart Screen to be an Interactive Grid
Rather than users working with the current card format where the have to make updates mostly one by one, create and interactive grid which would allow users to organize and make updates to their quotes.
Instead of the current Shopping Cart taking up space and proving to be frustrating to deal with, introduce a Side Pane Pop-out to display quotes in a more organized format while still allowing the current mode linking functionality.