Do an eBay search at the top of an eBay page for the item that you are interested in researching. Make sure it brings up the items you are interested in. If not refine the search.
Then on the results page, the left side column has filters. At the bottom you will see a group of filters with Heading show Only. One is Completed Items and another is Sold Items. Look at the Sold to see what items sold for. Look at Completed Items to see what prices were being asked (and Sold will also be in here too with the UnSold). eBay Completed listings are kept online for 90 days but I think you can only search Sold back 30 or 60 days.
