Try the other equally important Commercial Angle! :(
@Jim Murray
I suggest you also look at this from the Website Owners perspective.
Amazon is one of their competitors and they are ANONYMOUSLY and STEALTHILY profiling their Website and commercial details and prices almost certainly helping them to undercut the offers provided on said Website!
Put this into a Global Commercial context and it does have far reaching anti-competitive and anti-small business Website competition problems! :(