Category Insights Report?

Hi!

I am trying to find/develop a category insights report, that details market share per cat – by search volume, revenue and units sold.
I’ve been using the report on Seller Central, but it does not allow for downloading of reports – just shows graphs. This means I need to copy and paste figures one by one.
I considered using a web-scraper, but saw that this is against Amazon’s T&Cs. Does any-body know of any way to get this data exported?