This article was written for bots just as much as it was for humans. Check out the relationship of the links and keywords. The string "price guide" is found 1

This article was written for bots just as much as it was for humans. Check out the relationship of the links and keywords. The string "price guide" is found 10 times, and always as a direct anchor text or near a link to the author's site. That's not a bad thing, these guys are doing it right. Listen to their advice.