I built a little tool for my own use which pulls port and sales data (each individual sale) from the top 5 into an Access database and allows me to slice and dice, export to Excel etc etc. This is not a slick "product" like what is commercially available and not really suitable for distribution. However, I could fairly easily adapt the code to work in individual excel files for the various sites.
Given the tools that are already out there, and I haven't looked at them in any detail, is this something anyone would be interested in if made available for a nominal sum?