It would be good if in both Bulk Edit & Ninja Lister, you were able to specify which Paypal account you wish to use.
Like many others, I have two accounts - one I use for my own sales, the other for Charity sales.
I have just listed 30+ items in my charity store - I now have to go through each and every one to change the Paypal address as I couldn't specify which one in Ninja.