Buying A article needed on Jewelry market.

A price survey needed on Jewelry market.
I want an article named "Online jewelry prices compared – shocking facts! One girl has read this and …[read more]".
This survey must contain a comparison of prices of 3 items of jewelry in 5 online jewelry shops (the choice of shops is up to you, I just want google 1st-pagers to be compared to google outsiders)
The article should also contain an introduction with author’s general conclusions based on the survey’s prices below.
Please PM me you considerations on very important question regarding this work: how the identity of items will be checked throughout all the sites? My strong opinion is that only a comparison of price on identical goods will be interesting. I think that identical goods could be found by finding different copies of the same image in Google’s images search, but there can be a simplier way.
Please PM me if you are interested.
Please don’t send PMs without telling a price of your work! Or, at least, give me some detailed considerations on price matters!