MARK,you can do the Red Book or you can get a Coin World magazine that has current trend prices in them.It can be bought at coin shop.Or there used to be Magazines at the book store which had current prices.Since you sell on ebay I would give it a shot first and use a reserve.The gold piece should go close to retail as they are always in demand.Some of your coins you can sell as bulk silver or list on ebay as a group with starting price of bulk silver.The bicentennial cins are good novelty items but not worth much over face value.