posted on Jan, 20 2015 @ 12:12 PM
I don't know if a way already exists - but I know it's possible to make something that would do this.
The biggest issue, technically, is the question of retrieving the relevant information.
Some of these sites have well-structured content - so things like "price", "Summary" and "description" are easy to pick out. Others are just
ad-hoc content.
If you really REALLY want something like this, contact me off-line (use my nic from here at bigfoot or yahoo), I can help make it for you.