Since you've already got Excel, go to your purchase histories, highlight everything and copy and paste them into Excel. It's easy with DAZ (if you're not doing prices) because all items are listed on the Itemized Order History.  It's more work with the other sites because they only list the orders on the account page and not the details for what was purchased.  Those have to be looked at one order at a time.

My visual indexes of Poser content are at http://www.sharecg.com/pf/rgagnon