I am not sure of the exact process, but this might get you started.
First, I would setup a separate BAQ Report that returns the values that I am interested in. Getting the BAQ report to auto-filter based on the records you have selected in Buyer Workbench may be another challenge.
Next, use something like the code in the link to print the BAQ Report. You will have to add a customization to the Buyer Workbench, and insert a button to trigger the print.
Honestly, unless there is a really strong business reason to not open with Excel, I would use that route. It is straight forward, and not as prone to future bugs as Epicor flushes its perfectly fine ERP for this crazy broken Kinetic nonsense.