FYI, Eric and Stefan don't want to buy this plugin - they are happy for other developers like me to help build Datafeedr into a stronger product through creation of these kinds of plugins.
I think $47 for these 2 plugins is a bargain personally - if you are interested, please visit my site for more details. I also have plenty of free tips and tricks for making the most from Datafeedr.
www.affiliatewebdesigners.com