Media products include items such as books, music (CD's, cassettes, records, etc.) and movies (DVD, VHS, etc.).  First, figure out which type of media product you'd like to specialize in.  Perhaps your local thrift stores have a lot of books that you could sell at a profit, or perhaps CD's frequently turn up at garage sales in your area.  Maybe you have a collection of DVD's you've watched too many times and you'd like to get rid of.  Once you've determined what type of media product you'd like to specialize in, it is important to get an idea of what types of items within that category sell for good prices and what products are basically cheap junk with minimal values.  Perhaps the best way to find out which products within a given product category are in heavy demand (as well as which ones are not in demand) is to check out recently completed auctions results.  The more time and effort you put into this type of research, the better prepared you will find yourself next time you run into a large accumulation of used CD's at a local garage sale, or a large group of newly stocked books at the local thrift store.  But pay close attention to what products are REALLY commanding high prices.  For example, the original release of a CD might be relatively worthless compared to a remastered edition with bonus tracks.  It can also help to know which types of products are in and of themselves almost always in high demand.  With media products, these can include (but are certainly not limited to) things such as just about anything relating to Detroit techno music, the Easton Press editions of classic books, Grace Chapel Inn religious fiction books, and the Criterion Collections versions of films.  You can also research which products are in high demand by going to other internet shopping sites.  This can be especially useful if you are curious about prices for products that have not recently appeared in Ebay auctions lately.  You might want to consider 10-day auctions for particularly rare and valuable items.  Rare items are less likely to get buried under page after page of listings, and this is especially true of items related to authors, musicians, films, and film directors who don't have a lot of items related to them posted on Ebay. It is often best to package extremely common, relatively worthless items of a particular media product category together into lots rather than try to sell them individually.  These lots perform better when the individual components are at least somewhat related to one another (e.g. "Lot of power pop CD's", "lot of thriller fiction paperbacks", "lot of action films". Good luck!