There are a number of online booksellers that are popular in India right now. The prices they charge for the same book often differ by as much as 10% (See this price comparison site to check http://www.indiabookstore.net/)
Since these are homogenous goods and anyone who can access one of the stores can as easily assess another I wonder how we might explain this price dispersion. I have not done a systematic study but it is my impression that it is not the case that there is an ordering of prices between stores which is the same for different books.
I was wondering whether there are any economic models which can explain this dispersion. In particular are there models which can be tested by using panels of price data.
[I confess I am fishing for a research topic.]