I'm looking to create a website selling a specific niche range of products. For example 'hair extensions.'
Using opensite explorer it's fairly easy to guage the competition for similar websites focused on this niche only e.g www.hairextensionsworld.com - I just look at their authority, number of incoming links, anchortext links etc.
However, I'm finding it more difficult to guage the competition if a large merchant, for example Amazon, has a page ranking for a specific keyphrase I'm after. Often the large merchant doesn't have a lot of external links to the specific page, but nonetheless it has power from being on the domain of the large merchant.
Are there any good tools / metrics for guaging the competition of such pages? Page authority I guess is one?
Thanks
