I am only doing the computer stuff ie database but they want to know if it is possible to check how many of one item were listed in a period of time and how many of those listed were sold and the price range for those sales

EG How many green cardigans were listed in the last 3 months, were they all new lsitings or some relists, how many of those green cardigans actually sold, and for what prices did they sell?

I'm thinking that sort of information is not something that would be available to those using ebay to sell their products but will ask anyway and happy to be proven wrong.